To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/trunk
« back to all changes in this revision
Viewing changes to mandos
- browse files at revision 24.1.153
- compare with another revision
- download diff
- download tarball
- view history from revision 24.1.153
- Committer: Björn Påhlsson
- Date: 2010-09-02 18:53:38 UTC
- mto: (237.4.3 mandos-release)
- mto: This revision was merged to the branch mainline in revision 421.
- Revision ID: belorn@fukt.bsnet.se-20100902185338-d1022sv517txn3sb
early commit to ease todays coding
- files added:
- plugins.d/plymouth
- files removed:
- DBUS-API
- debian/source
- debian/upstream
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python2.7
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008-2015 Teddy Hogeborn
15
# Copyright © 2008-2015 Björn Påhlsson
14
# Copyright © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 Björn Påhlsson
16
16
#
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
28
28
# along with this program. If not, see
29
29
# <http://www.gnu.org/licenses/>.
30
30
#
31
# Contact the authors at <mandos@recompile.se>.
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
32
#
33
33
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
36
37
from future_builtins import *
38
39
try:
40
import SocketServer as socketserver
41
except ImportError:
42
import socketserver
34
from __future__ import division, with_statement, absolute_import
35
36
import SocketServer as socketserver
43
37
import socket
44
import argparse
38
import optparse
45
39
import datetime
46
40
import errno
47
41
import gnutls.crypto
50
44
import gnutls.library.functions
51
45
import gnutls.library.constants
52
46
import gnutls.library.types
53
try:
54
import ConfigParser as configparser
55
except ImportError:
56
import configparser
47
import ConfigParser as configparser
57
48
import sys
58
49
import re
59
50
import os
68
59
import struct
69
60
import fcntl
70
61
import functools
71
try:
72
import cPickle as pickle
73
except ImportError:
74
import pickle
62
import cPickle as pickle
75
63
import multiprocessing
76
import types
77
import binascii
78
import tempfile
79
import itertools
80
import collections
81
import codecs
82
64
83
65
import dbus
84
66
import dbus.service
85
try:
86
import gobject
87
except ImportError:
88
from gi.repository import GObject as gobject
67
import gobject
89
68
import avahi
90
69
from dbus.mainloop.glib import DBusGMainLoop
91
70
import ctypes
101
80
except ImportError:
102
81
SO_BINDTODEVICE = None
103
82
104
if sys.version_info.major == 2:
105
str = unicode
106
107
version = "1.6.9"
108
stored_state_file = "clients.pickle"
109
110
logger = logging.getLogger()
111
syslogger = None
112
113
try:
114
if_nametoindex = ctypes.cdll.LoadLibrary(
115
ctypes.util.find_library("c")).if_nametoindex
116
except (OSError, AttributeError):
117
118
def if_nametoindex(interface):
119
"Get an interface index the hard way, i.e. using fcntl()"
120
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
121
with contextlib.closing(socket.socket()) as s:
122
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
123
struct.pack(b"16s16x", interface))
124
interface_index = struct.unpack("I", ifreq[16:20])[0]
125
return interface_index
126
127
128
def initlogger(debug, level=logging.WARNING):
129
"""init logger and add loglevel"""
130
131
global syslogger
132
syslogger = (logging.handlers.SysLogHandler(
133
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
134
address = "/dev/log"))
135
syslogger.setFormatter(logging.Formatter
136
('Mandos [%(process)d]: %(levelname)s:'
137
' %(message)s'))
138
logger.addHandler(syslogger)
139
140
if debug:
141
console = logging.StreamHandler()
142
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
143
' [%(process)d]:'
144
' %(levelname)s:'
145
' %(message)s'))
146
logger.addHandler(console)
147
logger.setLevel(level)
148
149
150
class PGPError(Exception):
151
"""Exception if encryption/decryption fails"""
152
pass
153
154
155
class PGPEngine(object):
156
"""A simple class for OpenPGP symmetric encryption & decryption"""
157
158
def __init__(self):
159
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
160
self.gnupgargs = ['--batch',
161
'--home', self.tempdir,
162
'--force-mdc',
163
'--quiet',
164
'--no-use-agent']
165
166
def __enter__(self):
167
return self
168
169
def __exit__(self, exc_type, exc_value, traceback):
170
self._cleanup()
171
return False
172
173
def __del__(self):
174
self._cleanup()
175
176
def _cleanup(self):
177
if self.tempdir is not None:
178
# Delete contents of tempdir
179
for root, dirs, files in os.walk(self.tempdir,
180
topdown = False):
181
for filename in files:
182
os.remove(os.path.join(root, filename))
183
for dirname in dirs:
184
os.rmdir(os.path.join(root, dirname))
185
# Remove tempdir
186
os.rmdir(self.tempdir)
187
self.tempdir = None
188
189
def password_encode(self, password):
190
# Passphrase can not be empty and can not contain newlines or
191
# NUL bytes. So we prefix it and hex encode it.
192
encoded = b"mandos" + binascii.hexlify(password)
193
if len(encoded) > 2048:
194
# GnuPG can't handle long passwords, so encode differently
195
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
196
.replace(b"\n", b"\\n")
197
.replace(b"\0", b"\\x00"))
198
return encoded
199
200
def encrypt(self, data, password):
201
passphrase = self.password_encode(password)
202
with tempfile.NamedTemporaryFile(
203
dir=self.tempdir) as passfile:
204
passfile.write(passphrase)
205
passfile.flush()
206
proc = subprocess.Popen(['gpg', '--symmetric',
207
'--passphrase-file',
208
passfile.name]
209
+ self.gnupgargs,
210
stdin = subprocess.PIPE,
211
stdout = subprocess.PIPE,
212
stderr = subprocess.PIPE)
213
ciphertext, err = proc.communicate(input = data)
214
if proc.returncode != 0:
215
raise PGPError(err)
216
return ciphertext
217
218
def decrypt(self, data, password):
219
passphrase = self.password_encode(password)
220
with tempfile.NamedTemporaryFile(
221
dir = self.tempdir) as passfile:
222
passfile.write(passphrase)
223
passfile.flush()
224
proc = subprocess.Popen(['gpg', '--decrypt',
225
'--passphrase-file',
226
passfile.name]
227
+ self.gnupgargs,
228
stdin = subprocess.PIPE,
229
stdout = subprocess.PIPE,
230
stderr = subprocess.PIPE)
231
decrypted_plaintext, err = proc.communicate(input = data)
232
if proc.returncode != 0:
233
raise PGPError(err)
234
return decrypted_plaintext
235
83
84
version = "1.0.14"
85
86
logger = logging.Logger(u'mandos')
87
syslogger = (logging.handlers.SysLogHandler
88
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
89
address = "/dev/log"))
90
syslogger.setFormatter(logging.Formatter
91
(u'Mandos [%(process)d]: %(levelname)s:'
92
u' %(message)s'))
93
logger.addHandler(syslogger)
94
95
console = logging.StreamHandler()
96
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
97
u' %(levelname)s:'
98
u' %(message)s'))
99
logger.addHandler(console)
236
100
237
101
class AvahiError(Exception):
238
102
def __init__(self, value, *args, **kwargs):
239
103
self.value = value
240
return super(AvahiError, self).__init__(value, *args,
241
**kwargs)
242
104
super(AvahiError, self).__init__(value, *args, **kwargs)
105
def __unicode__(self):
106
return unicode(repr(self.value))
243
107
244
108
class AvahiServiceError(AvahiError):
245
109
pass
246
110
247
248
111
class AvahiGroupError(AvahiError):
249
112
pass
250
113
255
118
Attributes:
256
119
interface: integer; avahi.IF_UNSPEC or an interface index.
257
120
Used to optionally bind to the specified interface.
258
name: string; Example: 'Mandos'
259
type: string; Example: '_mandos._tcp'.
260
See <https://www.iana.org/assignments/service-names-port-numbers>
121
name: string; Example: u'Mandos'
122
type: string; Example: u'_mandos._tcp'.
123
See <http://www.dns-sd.org/ServiceTypes.html>
261
124
port: integer; what port to announce
262
125
TXT: list of strings; TXT record for the service
263
126
domain: string; Domain to publish on, default to .local if empty.
269
132
server: D-Bus Server
270
133
bus: dbus.SystemBus()
271
134
"""
272
273
def __init__(self,
274
interface = avahi.IF_UNSPEC,
275
name = None,
276
servicetype = None,
277
port = None,
278
TXT = None,
279
domain = "",
280
host = "",
281
max_renames = 32768,
282
protocol = avahi.PROTO_UNSPEC,
283
bus = None):
135
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
136
servicetype = None, port = None, TXT = None,
137
domain = u"", host = u"", max_renames = 32768,
138
protocol = avahi.PROTO_UNSPEC, bus = None):
284
139
self.interface = interface
285
140
self.name = name
286
141
self.type = servicetype
294
149
self.group = None # our entry group
295
150
self.server = None
296
151
self.bus = bus
297
self.entry_group_state_changed_match = None
298
299
def rename(self, remove=True):
152
def rename(self):
300
153
"""Derived from the Avahi example code"""
301
154
if self.rename_count >= self.max_renames:
302
logger.critical("No suitable Zeroconf service name found"
303
" after %i retries, exiting.",
155
logger.critical(u"No suitable Zeroconf service name found"
156
u" after %i retries, exiting.",
304
157
self.rename_count)
305
raise AvahiServiceError("Too many renames")
306
self.name = str(
307
self.server.GetAlternativeServiceName(self.name))
158
raise AvahiServiceError(u"Too many renames")
159
self.name = self.server.GetAlternativeServiceName(self.name)
160
logger.info(u"Changing Zeroconf service name to %r ...",
161
unicode(self.name))
162
syslogger.setFormatter(logging.Formatter
163
(u'Mandos (%s) [%%(process)d]:'
164
u' %%(levelname)s: %%(message)s'
165
% self.name))
166
self.remove()
167
self.add()
308
168
self.rename_count += 1
309
logger.info("Changing Zeroconf service name to %r ...",
310
self.name)
311
if remove:
312
self.remove()
313
try:
314
self.add()
315
except dbus.exceptions.DBusException as error:
316
if (error.get_dbus_name()
317
== "org.freedesktop.Avahi.CollisionError"):
318
logger.info("Local Zeroconf service name collision.")
319
return self.rename(remove=False)
320
else:
321
logger.critical("D-Bus Exception", exc_info=error)
322
self.cleanup()
323
os._exit(1)
324
325
169
def remove(self):
326
170
"""Derived from the Avahi example code"""
327
if self.entry_group_state_changed_match is not None:
328
self.entry_group_state_changed_match.remove()
329
self.entry_group_state_changed_match = None
330
171
if self.group is not None:
331
172
self.group.Reset()
332
333
173
def add(self):
334
174
"""Derived from the Avahi example code"""
335
self.remove()
336
175
if self.group is None:
337
176
self.group = dbus.Interface(
338
177
self.bus.get_object(avahi.DBUS_NAME,
339
178
self.server.EntryGroupNew()),
340
179
avahi.DBUS_INTERFACE_ENTRY_GROUP)
341
self.entry_group_state_changed_match = (
342
self.group.connect_to_signal(
343
'StateChanged', self.entry_group_state_changed))
344
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
180
self.group.connect_to_signal('StateChanged',
181
self
182
.entry_group_state_changed)
183
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
345
184
self.name, self.type)
346
185
self.group.AddService(
347
186
self.interface,
352
191
dbus.UInt16(self.port),
353
192
avahi.string_array_to_txt_array(self.TXT))
354
193
self.group.Commit()
355
356
194
def entry_group_state_changed(self, state, error):
357
195
"""Derived from the Avahi example code"""
358
logger.debug("Avahi entry group state change: %i", state)
196
logger.debug(u"Avahi state change: %i", state)
359
197
360
198
if state == avahi.ENTRY_GROUP_ESTABLISHED:
361
logger.debug("Zeroconf service established.")
199
logger.debug(u"Zeroconf service established.")
362
200
elif state == avahi.ENTRY_GROUP_COLLISION:
363
logger.info("Zeroconf service name collision.")
201
logger.warning(u"Zeroconf service name collision.")
364
202
self.rename()
365
203
elif state == avahi.ENTRY_GROUP_FAILURE:
366
logger.critical("Avahi: Error in group state changed %s",
367
str(error))
368
raise AvahiGroupError("State changed: {!s}".format(error))
369
204
logger.critical(u"Avahi: Error in group state changed %s",
205
unicode(error))
206
raise AvahiGroupError(u"State changed: %s"
207
% unicode(error))
370
208
def cleanup(self):
371
209
"""Derived from the Avahi example code"""
372
210
if self.group is not None:
373
try:
374
self.group.Free()
375
except (dbus.exceptions.UnknownMethodException,
376
dbus.exceptions.DBusException):
377
pass
211
self.group.Free()
378
212
self.group = None
379
self.remove()
380
381
def server_state_changed(self, state, error=None):
213
def server_state_changed(self, state):
382
214
"""Derived from the Avahi example code"""
383
logger.debug("Avahi server state change: %i", state)
384
bad_states = {
385
avahi.SERVER_INVALID: "Zeroconf server invalid",
386
avahi.SERVER_REGISTERING: None,
387
avahi.SERVER_COLLISION: "Zeroconf server name collision",
388
avahi.SERVER_FAILURE: "Zeroconf server failure",
389
}
390
if state in bad_states:
391
if bad_states[state] is not None:
392
if error is None:
393
logger.error(bad_states[state])
394
else:
395
logger.error(bad_states[state] + ": %r", error)
396
self.cleanup()
215
if state == avahi.SERVER_COLLISION:
216
logger.error(u"Zeroconf server name collision")
217
self.remove()
397
218
elif state == avahi.SERVER_RUNNING:
398
try:
399
self.add()
400
except dbus.exceptions.DBusException as error:
401
if (error.get_dbus_name()
402
== "org.freedesktop.Avahi.CollisionError"):
403
logger.info("Local Zeroconf service name"
404
" collision.")
405
return self.rename(remove=False)
406
else:
407
logger.critical("D-Bus Exception", exc_info=error)
408
self.cleanup()
409
os._exit(1)
410
else:
411
if error is None:
412
logger.debug("Unknown state: %r", state)
413
else:
414
logger.debug("Unknown state: %r: %r", state, error)
415
219
self.add()
416
220
def activate(self):
417
221
"""Derived from the Avahi example code"""
418
222
if self.server is None:
419
223
self.server = dbus.Interface(
420
224
self.bus.get_object(avahi.DBUS_NAME,
421
avahi.DBUS_PATH_SERVER,
422
follow_name_owner_changes=True),
225
avahi.DBUS_PATH_SERVER),
423
226
avahi.DBUS_INTERFACE_SERVER)
424
self.server.connect_to_signal("StateChanged",
425
self.server_state_changed)
227
self.server.connect_to_signal(u"StateChanged",
228
self.server_state_changed)
426
229
self.server_state_changed(self.server.GetState())
427
230
428
231
429
class AvahiServiceToSyslog(AvahiService):
430
def rename(self, *args, **kwargs):
431
"""Add the new name to the syslog messages"""
432
ret = AvahiService.rename(self, *args, **kwargs)
433
syslogger.setFormatter(logging.Formatter(
434
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
435
.format(self.name)))
436
return ret
437
438
def call_pipe(connection, # : multiprocessing.Connection
439
func, *args, **kwargs):
440
"""This function is meant to be called by multiprocessing.Process
441
442
This function runs func(*args, **kwargs), and writes the resulting
443
return value on the provided multiprocessing.Connection.
444
"""
445
connection.send(func(*args, **kwargs))
446
connection.close()
447
448
232
class Client(object):
449
233
"""A representation of a client host served by this server.
450
234
451
235
Attributes:
452
approved: bool(); 'None' if not yet approved/disapproved
453
approval_delay: datetime.timedelta(); Time to wait for approval
454
approval_duration: datetime.timedelta(); Duration of one approval
236
name: string; from the config file, used in log messages and
237
D-Bus identifiers
238
fingerprint: string (40 or 32 hexadecimal digits); used to
239
uniquely identify the client
240
secret: bytestring; sent verbatim (over TLS) to client
241
host: string; available for use by the checker command
242
created: datetime.datetime(); (UTC) object creation
243
last_enabled: datetime.datetime(); (UTC)
244
enabled: bool()
245
last_checked_ok: datetime.datetime(); (UTC) or None
246
timeout: datetime.timedelta(); How long from last_checked_ok
247
until this client is disabled
248
interval: datetime.timedelta(); How often to start a new checker
249
disable_hook: If set, called by disable() as disable_hook(self)
455
250
checker: subprocess.Popen(); a running checker process used
456
251
to see if the client lives.
457
252
'None' if no process is running.
458
checker_callback_tag: a gobject event source tag, or None
459
checker_command: string; External command which is run to check
460
if client lives. %() expansions are done at
253
checker_initiator_tag: a gobject event source tag, or None
254
disable_initiator_tag: - '' -
255
checker_callback_tag: - '' -
256
checker_command: string; External command which is run to check if
257
client lives. %() expansions are done at
461
258
runtime with vars(self) as dict, so that for
462
259
instance %(name)s can be used in the command.
463
checker_initiator_tag: a gobject event source tag, or None
464
created: datetime.datetime(); (UTC) object creation
465
client_structure: Object describing what attributes a client has
466
and is used for storing the client at exit
467
260
current_checker_command: string; current running checker_command
468
disable_initiator_tag: a gobject event source tag, or None
469
enabled: bool()
470
fingerprint: string (40 or 32 hexadecimal digits); used to
471
uniquely identify the client
472
host: string; available for use by the checker command
473
interval: datetime.timedelta(); How often to start a new checker
474
last_approval_request: datetime.datetime(); (UTC) or None
475
last_checked_ok: datetime.datetime(); (UTC) or None
476
last_checker_status: integer between 0 and 255 reflecting exit
477
status of last checker. -1 reflects crashed
478
checker, -2 means no checker completed yet.
479
last_checker_signal: The signal which killed the last checker, if
480
last_checker_status is -1
481
last_enabled: datetime.datetime(); (UTC) or None
482
name: string; from the config file, used in log messages and
483
D-Bus identifiers
484
secret: bytestring; sent verbatim (over TLS) to client
485
timeout: datetime.timedelta(); How long from last_checked_ok
486
until this client is disabled
487
extended_timeout: extra long timeout when secret has been sent
488
runtime_expansions: Allowed attributes for runtime expansion.
489
expires: datetime.datetime(); time (UTC) when a client will be
490
disabled, or None
491
server_settings: The server_settings dict from main()
261
approved_delay: datetime.timedelta(); Time to wait for approval
262
_approved: bool(); 'None' if not yet approved/disapproved
263
approved_duration: datetime.timedelta(); Duration of one approval
492
264
"""
493
265
494
runtime_expansions = ("approval_delay", "approval_duration",
495
"created", "enabled", "expires",
496
"fingerprint", "host", "interval",
497
"last_approval_request", "last_checked_ok",
498
"last_enabled", "name", "timeout")
499
client_defaults = {
500
"timeout": "PT5M",
501
"extended_timeout": "PT15M",
502
"interval": "PT2M",
503
"checker": "fping -q -- %%(host)s",
504
"host": "",
505
"approval_delay": "PT0S",
506
"approval_duration": "PT1S",
507
"approved_by_default": "True",
508
"enabled": "True",
509
}
510
511
266
@staticmethod
512
def config_parser(config):
513
"""Construct a new dict of client settings of this form:
514
{ client_name: {setting_name: value, ...}, ...}
515
with exceptions for any special settings as defined above.
516
NOTE: Must be a pure function. Must return the same result
517
value given the same arguments.
518
"""
519
settings = {}
520
for client_name in config.sections():
521
section = dict(config.items(client_name))
522
client = settings[client_name] = {}
523
524
client["host"] = section["host"]
525
# Reformat values from string types to Python types
526
client["approved_by_default"] = config.getboolean(
527
client_name, "approved_by_default")
528
client["enabled"] = config.getboolean(client_name,
529
"enabled")
530
531
# Uppercase and remove spaces from fingerprint for later
532
# comparison purposes with return value from the
533
# fingerprint() function
534
client["fingerprint"] = (section["fingerprint"].upper()
535
.replace(" ", ""))
536
if "secret" in section:
537
client["secret"] = section["secret"].decode("base64")
538
elif "secfile" in section:
539
with open(os.path.expanduser(os.path.expandvars
540
(section["secfile"])),
541
"rb") as secfile:
542
client["secret"] = secfile.read()
543
else:
544
raise TypeError("No secret or secfile for section {}"
545
.format(section))
546
client["timeout"] = string_to_delta(section["timeout"])
547
client["extended_timeout"] = string_to_delta(
548
section["extended_timeout"])
549
client["interval"] = string_to_delta(section["interval"])
550
client["approval_delay"] = string_to_delta(
551
section["approval_delay"])
552
client["approval_duration"] = string_to_delta(
553
section["approval_duration"])
554
client["checker_command"] = section["checker"]
555
client["last_approval_request"] = None
556
client["last_checked_ok"] = None
557
client["last_checker_status"] = -2
558
559
return settings
560
561
def __init__(self, settings, name = None, server_settings=None):
267
def _timedelta_to_milliseconds(td):
268
"Convert a datetime.timedelta() to milliseconds"
269
return ((td.days * 24 * 60 * 60 * 1000)
270
+ (td.seconds * 1000)
271
+ (td.microseconds // 1000))
272
273
def timeout_milliseconds(self):
274
"Return the 'timeout' attribute in milliseconds"
275
return self._timedelta_to_milliseconds(self.timeout)
276
277
def interval_milliseconds(self):
278
"Return the 'interval' attribute in milliseconds"
279
return self._timedelta_to_milliseconds(self.interval)
280
281
def approved_delay_milliseconds(self):
282
return self._timedelta_to_milliseconds(self.approved_delay)
283
284
def __init__(self, name = None, disable_hook=None, config=None):
285
"""Note: the 'checker' key in 'config' sets the
286
'checker_command' attribute and *not* the 'checker'
287
attribute."""
562
288
self.name = name
563
if server_settings is None:
564
server_settings = {}
565
self.server_settings = server_settings
566
# adding all client settings
567
for setting, value in settings.items():
568
setattr(self, setting, value)
569
570
if self.enabled:
571
if not hasattr(self, "last_enabled"):
572
self.last_enabled = datetime.datetime.utcnow()
573
if not hasattr(self, "expires"):
574
self.expires = (datetime.datetime.utcnow()
575
+ self.timeout)
289
if config is None:
290
config = {}
291
logger.debug(u"Creating client %r", self.name)
292
# Uppercase and remove spaces from fingerprint for later
293
# comparison purposes with return value from the fingerprint()
294
# function
295
self.fingerprint = (config[u"fingerprint"].upper()
296
.replace(u" ", u""))
297
logger.debug(u" Fingerprint: %s", self.fingerprint)
298
if u"secret" in config:
299
self.secret = config[u"secret"].decode(u"base64")
300
elif u"secfile" in config:
301
with open(os.path.expanduser(os.path.expandvars
302
(config[u"secfile"])),
303
"rb") as secfile:
304
self.secret = secfile.read()
576
305
else:
577
self.last_enabled = None
578
self.expires = None
579
580
logger.debug("Creating client %r", self.name)
581
logger.debug(" Fingerprint: %s", self.fingerprint)
582
self.created = settings.get("created",
583
datetime.datetime.utcnow())
584
585
# attributes specific for this server instance
306
#XXX Need to allow secret on demand!
307
raise TypeError(u"No secret or secfile for client %s"
308
% self.name)
309
self.host = config.get(u"host", u"")
310
self.created = datetime.datetime.utcnow()
311
self.enabled = False
312
self.last_enabled = None
313
self.last_checked_ok = None
314
self.timeout = string_to_delta(config[u"timeout"])
315
self.interval = string_to_delta(config[u"interval"])
316
self.disable_hook = disable_hook
586
317
self.checker = None
587
318
self.checker_initiator_tag = None
588
319
self.disable_initiator_tag = None
589
320
self.checker_callback_tag = None
321
self.checker_command = config[u"checker"]
590
322
self.current_checker_command = None
591
self.approved = None
323
self.last_connect = None
592
324
self.approvals_pending = 0
593
self.changedstate = multiprocessing_manager.Condition(
594
multiprocessing_manager.Lock())
595
self.client_structure = [attr
596
for attr in self.__dict__.iterkeys()
597
if not attr.startswith("_")]
598
self.client_structure.append("client_structure")
599
600
for name, t in inspect.getmembers(
601
type(self), lambda obj: isinstance(obj, property)):
602
if not name.startswith("_"):
603
self.client_structure.append(name)
604
605
# Send notice to process children that client state has changed
325
self._approved = None
326
self.approved_by_default = config.get(u"approved_by_default",
327
False)
328
self.approved_delay = string_to_delta(
329
config[u"approved_delay"])
330
self.approved_duration = string_to_delta(
331
config[u"approved_duration"])
332
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
333
606
334
def send_changedstate(self):
607
with self.changedstate:
608
self.changedstate.notify_all()
609
335
self.changedstate.acquire()
336
self.changedstate.notify_all()
337
self.changedstate.release()
338
610
339
def enable(self):
611
340
"""Start this client's checker and timeout hooks"""
612
if getattr(self, "enabled", False):
341
if getattr(self, u"enabled", False):
613
342
# Already enabled
614
343
return
615
self.expires = datetime.datetime.utcnow() + self.timeout
616
self.enabled = True
344
self.send_changedstate()
617
345
self.last_enabled = datetime.datetime.utcnow()
618
self.init_checker()
619
self.send_changedstate()
346
# Schedule a new checker to be started an 'interval' from now,
347
# and every interval from then on.
348
self.checker_initiator_tag = (gobject.timeout_add
349
(self.interval_milliseconds(),
350
self.start_checker))
351
# Schedule a disable() when 'timeout' has passed
352
self.disable_initiator_tag = (gobject.timeout_add
353
(self.timeout_milliseconds(),
354
self.disable))
355
self.enabled = True
356
# Also start a new checker *right now*.
357
self.start_checker()
620
358
621
359
def disable(self, quiet=True):
622
360
"""Disable this client."""
623
361
if not getattr(self, "enabled", False):
624
362
return False
625
363
if not quiet:
626
logger.info("Disabling client %s", self.name)
627
if getattr(self, "disable_initiator_tag", None) is not None:
364
self.send_changedstate()
365
if not quiet:
366
logger.info(u"Disabling client %s", self.name)
367
if getattr(self, u"disable_initiator_tag", False):
628
368
gobject.source_remove(self.disable_initiator_tag)
629
369
self.disable_initiator_tag = None
630
self.expires = None
631
if getattr(self, "checker_initiator_tag", None) is not None:
370
if getattr(self, u"checker_initiator_tag", False):
632
371
gobject.source_remove(self.checker_initiator_tag)
633
372
self.checker_initiator_tag = None
634
373
self.stop_checker()
374
if self.disable_hook:
375
self.disable_hook(self)
635
376
self.enabled = False
636
if not quiet:
637
self.send_changedstate()
638
377
# Do not run this again if called by a gobject.timeout_add
639
378
return False
640
379
641
380
def __del__(self):
381
self.disable_hook = None
642
382
self.disable()
643
383
644
def init_checker(self):
645
# Schedule a new checker to be started an 'interval' from now,
646
# and every interval from then on.
647
if self.checker_initiator_tag is not None:
648
gobject.source_remove(self.checker_initiator_tag)
649
self.checker_initiator_tag = gobject.timeout_add(
650
int(self.interval.total_seconds() * 1000),
651
self.start_checker)
652
# Schedule a disable() when 'timeout' has passed
653
if self.disable_initiator_tag is not None:
654
gobject.source_remove(self.disable_initiator_tag)
655
self.disable_initiator_tag = gobject.timeout_add(
656
int(self.timeout.total_seconds() * 1000), self.disable)
657
# Also start a new checker *right now*.
658
self.start_checker()
659
660
def checker_callback(self, source, condition, connection,
661
command):
384
def checker_callback(self, pid, condition, command):
662
385
"""The checker has completed, so take appropriate actions."""
663
386
self.checker_callback_tag = None
664
387
self.checker = None
665
# Read return code from connection (see call_pipe)
666
returncode = connection.recv()
667
connection.close()
668
669
if returncode >= 0:
670
self.last_checker_status = returncode
671
self.last_checker_signal = None
672
if self.last_checker_status == 0:
673
logger.info("Checker for %(name)s succeeded",
388
if os.WIFEXITED(condition):
389
exitstatus = os.WEXITSTATUS(condition)
390
if exitstatus == 0:
391
logger.info(u"Checker for %(name)s succeeded",
674
392
vars(self))
675
393
self.checked_ok()
676
394
else:
677
logger.info("Checker for %(name)s failed", vars(self))
395
logger.info(u"Checker for %(name)s failed",
396
vars(self))
678
397
else:
679
self.last_checker_status = -1
680
self.last_checker_signal = -returncode
681
logger.warning("Checker for %(name)s crashed?",
398
logger.warning(u"Checker for %(name)s crashed?",
682
399
vars(self))
683
return False
684
400
685
401
def checked_ok(self):
686
"""Assert that the client has been seen, alive and well."""
402
"""Bump up the timeout for this client.
403
404
This should only be called when the client has been seen,
405
alive and well.
406
"""
687
407
self.last_checked_ok = datetime.datetime.utcnow()
688
self.last_checker_status = 0
689
self.last_checker_signal = None
690
self.bump_timeout()
691
692
def bump_timeout(self, timeout=None):
693
"""Bump up the timeout for this client."""
694
if timeout is None:
695
timeout = self.timeout
696
if self.disable_initiator_tag is not None:
697
gobject.source_remove(self.disable_initiator_tag)
698
self.disable_initiator_tag = None
699
if getattr(self, "enabled", False):
700
self.disable_initiator_tag = gobject.timeout_add(
701
int(timeout.total_seconds() * 1000), self.disable)
702
self.expires = datetime.datetime.utcnow() + timeout
703
704
def need_approval(self):
705
self.last_approval_request = datetime.datetime.utcnow()
408
gobject.source_remove(self.disable_initiator_tag)
409
self.disable_initiator_tag = (gobject.timeout_add
410
(self.timeout_milliseconds(),
411
self.disable))
706
412
707
413
def start_checker(self):
708
414
"""Start a new checker subprocess if one is not running.
710
416
If a checker already exists, leave it running and do
711
417
nothing."""
712
418
# The reason for not killing a running checker is that if we
713
# did that, and if a checker (for some reason) started running
714
# slowly and taking more than 'interval' time, then the client
715
# would inevitably timeout, since no checker would get a
716
# chance to run to completion. If we instead leave running
419
# did that, then if a checker (for some reason) started
420
# running slowly and taking more than 'interval' time, the
421
# client would inevitably timeout, since no checker would get
422
# a chance to run to completion. If we instead leave running
717
423
# checkers alone, the checker would have to take more time
718
424
# than 'timeout' for the client to be disabled, which is as it
719
425
# should be.
720
426
721
if self.checker is not None and not self.checker.is_alive():
722
logger.warning("Checker was not alive; joining")
723
self.checker.join()
724
self.checker = None
427
# If a checker exists, make sure it is not a zombie
428
try:
429
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
430
except (AttributeError, OSError), error:
431
if (isinstance(error, OSError)
432
and error.errno != errno.ECHILD):
433
raise error
434
else:
435
if pid:
436
logger.warning(u"Checker was a zombie")
437
gobject.source_remove(self.checker_callback_tag)
438
self.checker_callback(pid, status,
439
self.current_checker_command)
725
440
# Start a new checker if needed
726
441
if self.checker is None:
727
# Escape attributes for the shell
728
escaped_attrs = {
729
attr: re.escape(str(getattr(self, attr)))
730
for attr in self.runtime_expansions }
731
442
try:
732
command = self.checker_command % escaped_attrs
733
except TypeError as error:
734
logger.error('Could not format string "%s"',
735
self.checker_command,
736
exc_info=error)
737
return True # Try again later
443
# In case checker_command has exactly one % operator
444
command = self.checker_command % self.host
445
except TypeError:
446
# Escape attributes for the shell
447
escaped_attrs = dict((key,
448
re.escape(unicode(str(val),
449
errors=
450
u'replace')))
451
for key, val in
452
vars(self).iteritems())
453
try:
454
command = self.checker_command % escaped_attrs
455
except TypeError, error:
456
logger.error(u'Could not format string "%s":'
457
u' %s', self.checker_command, error)
458
return True # Try again later
738
459
self.current_checker_command = command
739
logger.info("Starting checker %r for %s", command,
740
self.name)
741
# We don't need to redirect stdout and stderr, since
742
# in normal mode, that is already done by daemon(),
743
# and in debug mode we don't want to. (Stdin is
744
# always replaced by /dev/null.)
745
# The exception is when not debugging but nevertheless
746
# running in the foreground; use the previously
747
# created wnull.
748
popen_args = { "close_fds": True,
749
"shell": True,
750
"cwd": "/" }
751
if (not self.server_settings["debug"]
752
and self.server_settings["foreground"]):
753
popen_args.update({"stdout": wnull,
754
"stderr": wnull })
755
pipe = multiprocessing.Pipe(duplex = False)
756
self.checker = multiprocessing.Process(
757
target = call_pipe,
758
args = (pipe[1], subprocess.call, command),
759
kwargs = popen_args)
760
self.checker.start()
761
self.checker_callback_tag = gobject.io_add_watch(
762
pipe[0].fileno(), gobject.IO_IN,
763
self.checker_callback, pipe[0], command)
460
try:
461
logger.info(u"Starting checker %r for %s",
462
command, self.name)
463
# We don't need to redirect stdout and stderr, since
464
# in normal mode, that is already done by daemon(),
465
# and in debug mode we don't want to. (Stdin is
466
# always replaced by /dev/null.)
467
self.checker = subprocess.Popen(command,
468
close_fds=True,
469
shell=True, cwd=u"/")
470
self.checker_callback_tag = (gobject.child_watch_add
471
(self.checker.pid,
472
self.checker_callback,
473
data=command))
474
# The checker may have completed before the gobject
475
# watch was added. Check for this.
476
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
477
if pid:
478
gobject.source_remove(self.checker_callback_tag)
479
self.checker_callback(pid, status, command)
480
except OSError, error:
481
logger.error(u"Failed to start subprocess: %s",
482
error)
764
483
# Re-run this periodically if run by gobject.timeout_add
765
484
return True
766
485
769
488
if self.checker_callback_tag:
770
489
gobject.source_remove(self.checker_callback_tag)
771
490
self.checker_callback_tag = None
772
if getattr(self, "checker", None) is None:
491
if getattr(self, u"checker", None) is None:
773
492
return
774
logger.debug("Stopping checker for %(name)s", vars(self))
775
self.checker.terminate()
493
logger.debug(u"Stopping checker for %(name)s", vars(self))
494
try:
495
os.kill(self.checker.pid, signal.SIGTERM)
496
#time.sleep(0.5)
497
#if self.checker.poll() is None:
498
# os.kill(self.checker.pid, signal.SIGKILL)
499
except OSError, error:
500
if error.errno != errno.ESRCH: # No such process
501
raise
776
502
self.checker = None
777
503
778
779
def dbus_service_property(dbus_interface,
780
signature="v",
781
access="readwrite",
782
byte_arrays=False):
504
def dbus_service_property(dbus_interface, signature=u"v",
505
access=u"readwrite", byte_arrays=False):
783
506
"""Decorators for marking methods of a DBusObjectWithProperties to
784
507
become properties on the D-Bus.
785
508
792
515
"""
793
516
# Encoding deeply encoded byte arrays is not supported yet by the
794
517
# "Set" method, so we fail early here:
795
if byte_arrays and signature != "ay":
796
raise ValueError("Byte arrays not supported for non-'ay'"
797
" signature {!r}".format(signature))
798
518
if byte_arrays and signature != u"ay":
519
raise ValueError(u"Byte arrays not supported for non-'ay'"
520
u" signature %r" % signature)
799
521
def decorator(func):
800
522
func._dbus_is_property = True
801
523
func._dbus_interface = dbus_interface
802
524
func._dbus_signature = signature
803
525
func._dbus_access = access
804
526
func._dbus_name = func.__name__
805
if func._dbus_name.endswith("_dbus_property"):
527
if func._dbus_name.endswith(u"_dbus_property"):
806
528
func._dbus_name = func._dbus_name[:-14]
807
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
808
return func
809
810
return decorator
811
812
813
def dbus_interface_annotations(dbus_interface):
814
"""Decorator for marking functions returning interface annotations
815
816
Usage:
817
818
@dbus_interface_annotations("org.example.Interface")
819
def _foo(self): # Function name does not matter
820
return {"org.freedesktop.DBus.Deprecated": "true",
821
"org.freedesktop.DBus.Property.EmitsChangedSignal":
822
"false"}
823
"""
824
825
def decorator(func):
826
func._dbus_is_interface = True
827
func._dbus_interface = dbus_interface
828
func._dbus_name = dbus_interface
829
return func
830
831
return decorator
832
833
834
def dbus_annotations(annotations):
835
"""Decorator to annotate D-Bus methods, signals or properties
836
Usage:
837
838
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
839
"org.freedesktop.DBus.Property."
840
"EmitsChangedSignal": "false"})
841
@dbus_service_property("org.example.Interface", signature="b",
842
access="r")
843
def Property_dbus_property(self):
844
return dbus.Boolean(False)
845
"""
846
847
def decorator(func):
848
func._dbus_annotations = annotations
849
return func
850
529
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
530
return func
851
531
return decorator
852
532
853
533
854
534
class DBusPropertyException(dbus.exceptions.DBusException):
855
535
"""A base class for D-Bus property-related exceptions
856
536
"""
857
pass
537
def __unicode__(self):
538
return unicode(str(self))
858
539
859
540
860
541
class DBusPropertyAccessException(DBusPropertyException):
871
552
872
553
class DBusObjectWithProperties(dbus.service.Object):
873
554
"""A D-Bus object with properties.
874
555
875
556
Classes inheriting from this can use the dbus_service_property
876
557
decorator to expose methods as D-Bus properties. It exposes the
877
558
standard Get(), Set(), and GetAll() methods on the D-Bus.
878
559
"""
879
560
880
561
@staticmethod
881
def _is_dbus_thing(thing):
882
"""Returns a function testing if an attribute is a D-Bus thing
883
884
If called like _is_dbus_thing("method") it returns a function
885
suitable for use as predicate to inspect.getmembers().
886
"""
887
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
888
False)
562
def _is_dbus_property(obj):
563
return getattr(obj, u"_dbus_is_property", False)
889
564
890
def _get_all_dbus_things(self, thing):
565
def _get_all_dbus_properties(self):
891
566
"""Returns a generator of (name, attribute) pairs
892
567
"""
893
return ((getattr(athing.__get__(self), "_dbus_name", name),
894
athing.__get__(self))
895
for cls in self.__class__.__mro__
896
for name, athing in
897
inspect.getmembers(cls, self._is_dbus_thing(thing)))
568
return ((prop._dbus_name, prop)
569
for name, prop in
570
inspect.getmembers(self, self._is_dbus_property))
898
571
899
572
def _get_dbus_property(self, interface_name, property_name):
900
573
"""Returns a bound method if one exists which is a D-Bus
901
574
property with the specified name and interface.
902
575
"""
903
for cls in self.__class__.__mro__:
904
for name, value in inspect.getmembers(
905
cls, self._is_dbus_thing("property")):
906
if (value._dbus_name == property_name
907
and value._dbus_interface == interface_name):
908
return value.__get__(self)
909
576
for name in (property_name,
577
property_name + u"_dbus_property"):
578
prop = getattr(self, name, None)
579
if (prop is None
580
or not self._is_dbus_property(prop)
581
or prop._dbus_name != property_name
582
or (interface_name and prop._dbus_interface
583
and interface_name != prop._dbus_interface)):
584
continue
585
return prop
910
586
# No such property
911
raise DBusPropertyNotFound("{}:{}.{}".format(
912
self.dbus_object_path, interface_name, property_name))
587
raise DBusPropertyNotFound(self.dbus_object_path + u":"
588
+ interface_name + u"."
589
+ property_name)
913
590
914
@dbus.service.method(dbus.PROPERTIES_IFACE,
915
in_signature="ss",
916
out_signature="v")
591
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
592
out_signature=u"v")
917
593
def Get(self, interface_name, property_name):
918
594
"""Standard D-Bus property Get() method, see D-Bus standard.
919
595
"""
920
596
prop = self._get_dbus_property(interface_name, property_name)
921
if prop._dbus_access == "write":
597
if prop._dbus_access == u"write":
922
598
raise DBusPropertyAccessException(property_name)
923
599
value = prop()
924
if not hasattr(value, "variant_level"):
600
if not hasattr(value, u"variant_level"):
925
601
return value
926
602
return type(value)(value, variant_level=value.variant_level+1)
927
603
928
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
604
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
929
605
def Set(self, interface_name, property_name, value):
930
606
"""Standard D-Bus property Set() method, see D-Bus standard.
931
607
"""
932
608
prop = self._get_dbus_property(interface_name, property_name)
933
if prop._dbus_access == "read":
609
if prop._dbus_access == u"read":
934
610
raise DBusPropertyAccessException(property_name)
935
if prop._dbus_get_args_options["byte_arrays"]:
611
if prop._dbus_get_args_options[u"byte_arrays"]:
936
612
# The byte_arrays option is not supported yet on
937
613
# signatures other than "ay".
938
if prop._dbus_signature != "ay":
939
raise ValueError("Byte arrays not supported for non-"
940
"'ay' signature {!r}"
941
.format(prop._dbus_signature))
942
value = dbus.ByteArray(b''.join(chr(byte)
943
for byte in value))
614
if prop._dbus_signature != u"ay":
615
raise ValueError
616
value = dbus.ByteArray(''.join(unichr(byte)
617
for byte in value))
944
618
prop(value)
945
619
946
@dbus.service.method(dbus.PROPERTIES_IFACE,
947
in_signature="s",
948
out_signature="a{sv}")
620
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
621
out_signature=u"a{sv}")
949
622
def GetAll(self, interface_name):
950
623
"""Standard D-Bus property GetAll() method, see D-Bus
951
624
standard.
952
625
953
626
Note: Will not include properties with access="write".
954
627
"""
955
properties = {}
956
for name, prop in self._get_all_dbus_things("property"):
628
all = {}
629
for name, prop in self._get_all_dbus_properties():
957
630
if (interface_name
958
631
and interface_name != prop._dbus_interface):
959
632
# Interface non-empty but did not match
960
633
continue
961
634
# Ignore write-only properties
962
if prop._dbus_access == "write":
635
if prop._dbus_access == u"write":
963
636
continue
964
637
value = prop()
965
if not hasattr(value, "variant_level"):
966
properties[name] = value
638
if not hasattr(value, u"variant_level"):
639
all[name] = value
967
640
continue
968
properties[name] = type(value)(
969
value, variant_level = value.variant_level + 1)
970
return dbus.Dictionary(properties, signature="sv")
971
972
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
973
def PropertiesChanged(self, interface_name, changed_properties,
974
invalidated_properties):
975
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
976
standard.
977
"""
978
pass
641
all[name] = type(value)(value, variant_level=
642
value.variant_level+1)
643
return dbus.Dictionary(all, signature=u"sv")
979
644
980
645
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
981
out_signature="s",
646
out_signature=u"s",
982
647
path_keyword='object_path',
983
648
connection_keyword='connection')
984
649
def Introspect(self, object_path, connection):
985
"""Overloading of standard D-Bus method.
986
987
Inserts property tags and interface annotation tags.
650
"""Standard D-Bus method, overloaded to insert property tags.
988
651
"""
989
652
xmlstring = dbus.service.Object.Introspect(self, object_path,
990
653
connection)
991
654
try:
992
655
document = xml.dom.minidom.parseString(xmlstring)
993
994
656
def make_tag(document, name, prop):
995
e = document.createElement("property")
996
e.setAttribute("name", name)
997
e.setAttribute("type", prop._dbus_signature)
998
e.setAttribute("access", prop._dbus_access)
657
e = document.createElement(u"property")
658
e.setAttribute(u"name", name)
659
e.setAttribute(u"type", prop._dbus_signature)
660
e.setAttribute(u"access", prop._dbus_access)
999
661
return e
1000
1001
for if_tag in document.getElementsByTagName("interface"):
1002
# Add property tags
662
for if_tag in document.getElementsByTagName(u"interface"):
1003
663
for tag in (make_tag(document, name, prop)
1004
664
for name, prop
1005
in self._get_all_dbus_things("property")
665
in self._get_all_dbus_properties()
1006
666
if prop._dbus_interface
1007
== if_tag.getAttribute("name")):
667
== if_tag.getAttribute(u"name")):
1008
668
if_tag.appendChild(tag)
1009
# Add annotation tags
1010
for typ in ("method", "signal", "property"):
1011
for tag in if_tag.getElementsByTagName(typ):
1012
annots = dict()
1013
for name, prop in (self.
1014
_get_all_dbus_things(typ)):
1015
if (name == tag.getAttribute("name")
1016
and prop._dbus_interface
1017
== if_tag.getAttribute("name")):
1018
annots.update(getattr(
1019
prop, "_dbus_annotations", {}))
1020
for name, value in annots.items():
1021
ann_tag = document.createElement(
1022
"annotation")
1023
ann_tag.setAttribute("name", name)
1024
ann_tag.setAttribute("value", value)
1025
tag.appendChild(ann_tag)
1026
# Add interface annotation tags
1027
for annotation, value in dict(
1028
itertools.chain.from_iterable(
1029
annotations().items()
1030
for name, annotations
1031
in self._get_all_dbus_things("interface")
1032
if name == if_tag.getAttribute("name")
1033
)).items():
1034
ann_tag = document.createElement("annotation")
1035
ann_tag.setAttribute("name", annotation)
1036
ann_tag.setAttribute("value", value)
1037
if_tag.appendChild(ann_tag)
1038
669
# Add the names to the return values for the
1039
670
# "org.freedesktop.DBus.Properties" methods
1040
if (if_tag.getAttribute("name")
1041
== "org.freedesktop.DBus.Properties"):
1042
for cn in if_tag.getElementsByTagName("method"):
1043
if cn.getAttribute("name") == "Get":
1044
for arg in cn.getElementsByTagName("arg"):
1045
if (arg.getAttribute("direction")
1046
== "out"):
1047
arg.setAttribute("name", "value")
1048
elif cn.getAttribute("name") == "GetAll":
1049
for arg in cn.getElementsByTagName("arg"):
1050
if (arg.getAttribute("direction")
1051
== "out"):
1052
arg.setAttribute("name", "props")
1053
xmlstring = document.toxml("utf-8")
671
if (if_tag.getAttribute(u"name")
672
== u"org.freedesktop.DBus.Properties"):
673
for cn in if_tag.getElementsByTagName(u"method"):
674
if cn.getAttribute(u"name") == u"Get":
675
for arg in cn.getElementsByTagName(u"arg"):
676
if (arg.getAttribute(u"direction")
677
== u"out"):
678
arg.setAttribute(u"name", u"value")
679
elif cn.getAttribute(u"name") == u"GetAll":
680
for arg in cn.getElementsByTagName(u"arg"):
681
if (arg.getAttribute(u"direction")
682
== u"out"):
683
arg.setAttribute(u"name", u"props")
684
xmlstring = document.toxml(u"utf-8")
1054
685
document.unlink()
1055
686
except (AttributeError, xml.dom.DOMException,
1056
xml.parsers.expat.ExpatError) as error:
1057
logger.error("Failed to override Introspection method",
1058
exc_info=error)
687
xml.parsers.expat.ExpatError), error:
688
logger.error(u"Failed to override Introspection method",
689
error)
1059
690
return xmlstring
1060
691
1061
692
1062
def datetime_to_dbus(dt, variant_level=0):
1063
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1064
if dt is None:
1065
return dbus.String("", variant_level = variant_level)
1066
return dbus.String(dt.isoformat(), variant_level=variant_level)
1067
1068
1069
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1070
"""A class decorator; applied to a subclass of
1071
dbus.service.Object, it will add alternate D-Bus attributes with
1072
interface names according to the "alt_interface_names" mapping.
1073
Usage:
1074
1075
@alternate_dbus_interfaces({"org.example.Interface":
1076
"net.example.AlternateInterface"})
1077
class SampleDBusObject(dbus.service.Object):
1078
@dbus.service.method("org.example.Interface")
1079
def SampleDBusMethod():
1080
pass
1081
1082
The above "SampleDBusMethod" on "SampleDBusObject" will be
1083
reachable via two interfaces: "org.example.Interface" and
1084
"net.example.AlternateInterface", the latter of which will have
1085
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1086
"true", unless "deprecate" is passed with a False value.
1087
1088
This works for methods and signals, and also for D-Bus properties
1089
(from DBusObjectWithProperties) and interfaces (from the
1090
dbus_interface_annotations decorator).
1091
"""
1092
1093
def wrapper(cls):
1094
for orig_interface_name, alt_interface_name in (
1095
alt_interface_names.items()):
1096
attr = {}
1097
interface_names = set()
1098
# Go though all attributes of the class
1099
for attrname, attribute in inspect.getmembers(cls):
1100
# Ignore non-D-Bus attributes, and D-Bus attributes
1101
# with the wrong interface name
1102
if (not hasattr(attribute, "_dbus_interface")
1103
or not attribute._dbus_interface.startswith(
1104
orig_interface_name)):
1105
continue
1106
# Create an alternate D-Bus interface name based on
1107
# the current name
1108
alt_interface = attribute._dbus_interface.replace(
1109
orig_interface_name, alt_interface_name)
1110
interface_names.add(alt_interface)
1111
# Is this a D-Bus signal?
1112
if getattr(attribute, "_dbus_is_signal", False):
1113
if sys.version_info.major == 2:
1114
# Extract the original non-method undecorated
1115
# function by black magic
1116
nonmethod_func = (dict(
1117
zip(attribute.func_code.co_freevars,
1118
attribute.__closure__))
1119
["func"].cell_contents)
1120
else:
1121
nonmethod_func = attribute
1122
# Create a new, but exactly alike, function
1123
# object, and decorate it to be a new D-Bus signal
1124
# with the alternate D-Bus interface name
1125
if sys.version_info.major == 2:
1126
new_function = types.FunctionType(
1127
nonmethod_func.func_code,
1128
nonmethod_func.func_globals,
1129
nonmethod_func.func_name,
1130
nonmethod_func.func_defaults,
1131
nonmethod_func.func_closure)
1132
else:
1133
new_function = types.FunctionType(
1134
nonmethod_func.__code__,
1135
nonmethod_func.__globals__,
1136
nonmethod_func.__name__,
1137
nonmethod_func.__defaults__,
1138
nonmethod_func.__closure__)
1139
new_function = (dbus.service.signal(
1140
alt_interface,
1141
attribute._dbus_signature)(new_function))
1142
# Copy annotations, if any
1143
try:
1144
new_function._dbus_annotations = dict(
1145
attribute._dbus_annotations)
1146
except AttributeError:
1147
pass
1148
# Define a creator of a function to call both the
1149
# original and alternate functions, so both the
1150
# original and alternate signals gets sent when
1151
# the function is called
1152
def fixscope(func1, func2):
1153
"""This function is a scope container to pass
1154
func1 and func2 to the "call_both" function
1155
outside of its arguments"""
1156
1157
def call_both(*args, **kwargs):
1158
"""This function will emit two D-Bus
1159
signals by calling func1 and func2"""
1160
func1(*args, **kwargs)
1161
func2(*args, **kwargs)
1162
1163
return call_both
1164
# Create the "call_both" function and add it to
1165
# the class
1166
attr[attrname] = fixscope(attribute, new_function)
1167
# Is this a D-Bus method?
1168
elif getattr(attribute, "_dbus_is_method", False):
1169
# Create a new, but exactly alike, function
1170
# object. Decorate it to be a new D-Bus method
1171
# with the alternate D-Bus interface name. Add it
1172
# to the class.
1173
attr[attrname] = (
1174
dbus.service.method(
1175
alt_interface,
1176
attribute._dbus_in_signature,
1177
attribute._dbus_out_signature)
1178
(types.FunctionType(attribute.func_code,
1179
attribute.func_globals,
1180
attribute.func_name,
1181
attribute.func_defaults,
1182
attribute.func_closure)))
1183
# Copy annotations, if any
1184
try:
1185
attr[attrname]._dbus_annotations = dict(
1186
attribute._dbus_annotations)
1187
except AttributeError:
1188
pass
1189
# Is this a D-Bus property?
1190
elif getattr(attribute, "_dbus_is_property", False):
1191
# Create a new, but exactly alike, function
1192
# object, and decorate it to be a new D-Bus
1193
# property with the alternate D-Bus interface
1194
# name. Add it to the class.
1195
attr[attrname] = (dbus_service_property(
1196
alt_interface, attribute._dbus_signature,
1197
attribute._dbus_access,
1198
attribute._dbus_get_args_options
1199
["byte_arrays"])
1200
(types.FunctionType(
1201
attribute.func_code,
1202
attribute.func_globals,
1203
attribute.func_name,
1204
attribute.func_defaults,
1205
attribute.func_closure)))
1206
# Copy annotations, if any
1207
try:
1208
attr[attrname]._dbus_annotations = dict(
1209
attribute._dbus_annotations)
1210
except AttributeError:
1211
pass
1212
# Is this a D-Bus interface?
1213
elif getattr(attribute, "_dbus_is_interface", False):
1214
# Create a new, but exactly alike, function
1215
# object. Decorate it to be a new D-Bus interface
1216
# with the alternate D-Bus interface name. Add it
1217
# to the class.
1218
attr[attrname] = (
1219
dbus_interface_annotations(alt_interface)
1220
(types.FunctionType(attribute.func_code,
1221
attribute.func_globals,
1222
attribute.func_name,
1223
attribute.func_defaults,
1224
attribute.func_closure)))
1225
if deprecate:
1226
# Deprecate all alternate interfaces
1227
iname="_AlternateDBusNames_interface_annotation{}"
1228
for interface_name in interface_names:
1229
1230
@dbus_interface_annotations(interface_name)
1231
def func(self):
1232
return { "org.freedesktop.DBus.Deprecated":
1233
"true" }
1234
# Find an unused name
1235
for aname in (iname.format(i)
1236
for i in itertools.count()):
1237
if aname not in attr:
1238
attr[aname] = func
1239
break
1240
if interface_names:
1241
# Replace the class with a new subclass of it with
1242
# methods, signals, etc. as created above.
1243
cls = type(b"{}Alternate".format(cls.__name__),
1244
(cls, ), attr)
1245
return cls
1246
1247
return wrapper
1248
1249
1250
@alternate_dbus_interfaces({"se.recompile.Mandos":
1251
"se.bsnet.fukt.Mandos"})
1252
693
class ClientDBus(Client, DBusObjectWithProperties):
1253
694
"""A Client class using D-Bus
1254
695
1256
697
dbus_object_path: dbus.ObjectPath
1257
698
bus: dbus.SystemBus()
1258
699
"""
1259
1260
runtime_expansions = (Client.runtime_expansions
1261
+ ("dbus_object_path", ))
1262
1263
_interface = "se.recompile.Mandos.Client"
1264
1265
700
# dbus.service.Object doesn't use super(), so we can't either.
1266
701
1267
702
def __init__(self, bus = None, *args, **kwargs):
1269
704
Client.__init__(self, *args, **kwargs)
1270
705
# Only now, when this client is initialized, can it show up on
1271
706
# the D-Bus
1272
client_object_name = str(self.name).translate(
1273
{ord("."): ord("_"),
1274
ord("-"): ord("_")})
1275
self.dbus_object_path = dbus.ObjectPath(
1276
"/clients/" + client_object_name)
707
self.dbus_object_path = (dbus.ObjectPath
708
(u"/clients/"
709
+ self.name.replace(u".", u"_")))
1277
710
DBusObjectWithProperties.__init__(self, self.bus,
1278
711
self.dbus_object_path)
1279
712
1280
def notifychangeproperty(transform_func, dbus_name,
1281
type_func=lambda x: x,
1282
variant_level=1,
1283
invalidate_only=False,
1284
_interface=_interface):
1285
""" Modify a variable so that it's a property which announces
1286
its changes to DBus.
1287
1288
transform_fun: Function that takes a value and a variant_level
1289
and transforms it to a D-Bus type.
1290
dbus_name: D-Bus name of the variable
1291
type_func: Function that transform the value before sending it
1292
to the D-Bus. Default: no transform
1293
variant_level: D-Bus variant level. Default: 1
1294
"""
1295
attrname = "_{}".format(dbus_name)
1296
1297
def setter(self, value):
1298
if hasattr(self, "dbus_object_path"):
1299
if (not hasattr(self, attrname) or
1300
type_func(getattr(self, attrname, None))
1301
!= type_func(value)):
1302
if invalidate_only:
1303
self.PropertiesChanged(
1304
_interface, dbus.Dictionary(),
1305
dbus.Array((dbus_name, )))
1306
else:
1307
dbus_value = transform_func(
1308
type_func(value),
1309
variant_level = variant_level)
1310
self.PropertyChanged(dbus.String(dbus_name),
1311
dbus_value)
1312
self.PropertiesChanged(
1313
_interface,
1314
dbus.Dictionary({ dbus.String(dbus_name):
1315
dbus_value }),
1316
dbus.Array())
1317
setattr(self, attrname, value)
1318
1319
return property(lambda self: getattr(self, attrname), setter)
1320
1321
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1322
approvals_pending = notifychangeproperty(dbus.Boolean,
1323
"ApprovalPending",
1324
type_func = bool)
1325
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1326
last_enabled = notifychangeproperty(datetime_to_dbus,
1327
"LastEnabled")
1328
checker = notifychangeproperty(
1329
dbus.Boolean, "CheckerRunning",
1330
type_func = lambda checker: checker is not None)
1331
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1332
"LastCheckedOK")
1333
last_checker_status = notifychangeproperty(dbus.Int16,
1334
"LastCheckerStatus")
1335
last_approval_request = notifychangeproperty(
1336
datetime_to_dbus, "LastApprovalRequest")
1337
approved_by_default = notifychangeproperty(dbus.Boolean,
1338
"ApprovedByDefault")
1339
approval_delay = notifychangeproperty(
1340
dbus.UInt64, "ApprovalDelay",
1341
type_func = lambda td: td.total_seconds() * 1000)
1342
approval_duration = notifychangeproperty(
1343
dbus.UInt64, "ApprovalDuration",
1344
type_func = lambda td: td.total_seconds() * 1000)
1345
host = notifychangeproperty(dbus.String, "Host")
1346
timeout = notifychangeproperty(
1347
dbus.UInt64, "Timeout",
1348
type_func = lambda td: td.total_seconds() * 1000)
1349
extended_timeout = notifychangeproperty(
1350
dbus.UInt64, "ExtendedTimeout",
1351
type_func = lambda td: td.total_seconds() * 1000)
1352
interval = notifychangeproperty(
1353
dbus.UInt64, "Interval",
1354
type_func = lambda td: td.total_seconds() * 1000)
1355
checker_command = notifychangeproperty(dbus.String, "Checker")
1356
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1357
invalidate_only=True)
1358
1359
del notifychangeproperty
713
@staticmethod
714
def _datetime_to_dbus(dt, variant_level=0):
715
"""Convert a UTC datetime.datetime() to a D-Bus type."""
716
return dbus.String(dt.isoformat(),
717
variant_level=variant_level)
718
719
def enable(self):
720
oldstate = getattr(self, u"enabled", False)
721
r = Client.enable(self)
722
if oldstate != self.enabled:
723
# Emit D-Bus signals
724
self.PropertyChanged(dbus.String(u"enabled"),
725
dbus.Boolean(True, variant_level=1))
726
self.PropertyChanged(
727
dbus.String(u"last_enabled"),
728
self._datetime_to_dbus(self.last_enabled,
729
variant_level=1))
730
return r
731
732
def disable(self, quiet = False):
733
oldstate = getattr(self, u"enabled", False)
734
r = Client.disable(self, quiet=quiet)
735
if not quiet and oldstate != self.enabled:
736
# Emit D-Bus signal
737
self.PropertyChanged(dbus.String(u"enabled"),
738
dbus.Boolean(False, variant_level=1))
739
return r
1360
740
1361
741
def __del__(self, *args, **kwargs):
1362
742
try:
1363
743
self.remove_from_connection()
1364
744
except LookupError:
1365
745
pass
1366
if hasattr(DBusObjectWithProperties, "__del__"):
746
if hasattr(DBusObjectWithProperties, u"__del__"):
1367
747
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1368
748
Client.__del__(self, *args, **kwargs)
1369
749
1370
def checker_callback(self, source, condition,
1371
connection, command, *args, **kwargs):
1372
ret = Client.checker_callback(self, source, condition,
1373
connection, command, *args,
1374
**kwargs)
1375
exitstatus = self.last_checker_status
1376
if exitstatus >= 0:
750
def checker_callback(self, pid, condition, command,
751
*args, **kwargs):
752
self.checker_callback_tag = None
753
self.checker = None
754
# Emit D-Bus signal
755
self.PropertyChanged(dbus.String(u"checker_running"),
756
dbus.Boolean(False, variant_level=1))
757
if os.WIFEXITED(condition):
758
exitstatus = os.WEXITSTATUS(condition)
1377
759
# Emit D-Bus signal
1378
760
self.CheckerCompleted(dbus.Int16(exitstatus),
1379
dbus.Int64(0),
761
dbus.Int64(condition),
1380
762
dbus.String(command))
1381
763
else:
1382
764
# Emit D-Bus signal
1383
765
self.CheckerCompleted(dbus.Int16(-1),
1384
dbus.Int64(
1385
self.last_checker_signal),
766
dbus.Int64(condition),
1386
767
dbus.String(command))
1387
return ret
768
769
return Client.checker_callback(self, pid, condition, command,
770
*args, **kwargs)
771
772
def checked_ok(self, *args, **kwargs):
773
r = Client.checked_ok(self, *args, **kwargs)
774
# Emit D-Bus signal
775
self.PropertyChanged(
776
dbus.String(u"last_checked_ok"),
777
(self._datetime_to_dbus(self.last_checked_ok,
778
variant_level=1)))
779
return r
1388
780
1389
781
def start_checker(self, *args, **kwargs):
1390
old_checker_pid = getattr(self.checker, "pid", None)
782
old_checker = self.checker
783
if self.checker is not None:
784
old_checker_pid = self.checker.pid
785
else:
786
old_checker_pid = None
1391
787
r = Client.start_checker(self, *args, **kwargs)
1392
788
# Only if new checker process was started
1393
789
if (self.checker is not None
1394
790
and old_checker_pid != self.checker.pid):
1395
791
# Emit D-Bus signal
1396
792
self.CheckerStarted(self.current_checker_command)
793
self.PropertyChanged(
794
dbus.String(u"checker_running"),
795
dbus.Boolean(True, variant_level=1))
1397
796
return r
1398
797
798
def stop_checker(self, *args, **kwargs):
799
old_checker = getattr(self, u"checker", None)
800
r = Client.stop_checker(self, *args, **kwargs)
801
if (old_checker is not None
802
and getattr(self, u"checker", None) is None):
803
self.PropertyChanged(dbus.String(u"checker_running"),
804
dbus.Boolean(False, variant_level=1))
805
return r
806
1399
807
def _reset_approved(self):
1400
self.approved = None
808
self._approved = None
1401
809
return False
1402
810
1403
811
def approve(self, value=True):
1404
self.approved = value
1405
gobject.timeout_add(int(self.approval_duration.total_seconds()
1406
* 1000), self._reset_approved)
1407
self.send_changedstate()
812
self._approved = value
813
gobject.timeout_add(self._timedelta_to_milliseconds(self.approved_duration, self._reset_approved))
814
815
def approved_pending(self):
816
return self.approvals_pending > 0
817
1408
818
1409
819
## D-Bus methods, signals & properties
1410
1411
## Interfaces
820
_interface = u"se.bsnet.fukt.Mandos.Client"
1412
821
1413
822
## Signals
1414
823
1415
824
# CheckerCompleted - signal
1416
@dbus.service.signal(_interface, signature="nxs")
825
@dbus.service.signal(_interface, signature=u"nxs")
1417
826
def CheckerCompleted(self, exitcode, waitstatus, command):
1418
827
"D-Bus signal"
1419
828
pass
1420
829
1421
830
# CheckerStarted - signal
1422
@dbus.service.signal(_interface, signature="s")
831
@dbus.service.signal(_interface, signature=u"s")
1423
832
def CheckerStarted(self, command):
1424
833
"D-Bus signal"
1425
834
pass
1426
835
1427
836
# PropertyChanged - signal
1428
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1429
@dbus.service.signal(_interface, signature="sv")
837
@dbus.service.signal(_interface, signature=u"sv")
1430
838
def PropertyChanged(self, property, value):
1431
839
"D-Bus signal"
1432
840
pass
1433
841
1434
842
# GotSecret - signal
843
# Is sent after succesfull transfer of secret from mandos-server to mandos-client
1435
844
@dbus.service.signal(_interface)
1436
845
def GotSecret(self):
1437
"""D-Bus signal
1438
Is sent after a successful transfer of secret from the Mandos
1439
server to mandos-client
1440
"""
846
"D-Bus signal"
1441
847
pass
1442
848
1443
849
# Rejected - signal
1444
@dbus.service.signal(_interface, signature="s")
850
@dbus.service.signal(_interface, signature=u"s")
1445
851
def Rejected(self, reason):
1446
852
"D-Bus signal"
1447
853
pass
1448
854
1449
855
# NeedApproval - signal
1450
@dbus.service.signal(_interface, signature="tb")
856
@dbus.service.signal(_interface, signature=u"db")
1451
857
def NeedApproval(self, timeout, default):
1452
858
"D-Bus signal"
1453
return self.need_approval()
859
pass
1454
860
1455
861
## Methods
1456
862
1457
863
# Approve - method
1458
@dbus.service.method(_interface, in_signature="b")
864
@dbus.service.method(_interface, in_signature=u"b")
1459
865
def Approve(self, value):
1460
866
self.approve(value)
1461
867
1462
868
# CheckedOK - method
1463
869
@dbus.service.method(_interface)
1464
870
def CheckedOK(self):
1465
self.checked_ok()
871
return self.checked_ok()
1466
872
1467
873
# Enable - method
1468
874
@dbus.service.method(_interface)
1489
895
1490
896
## Properties
1491
897
1492
# ApprovalPending - property
1493
@dbus_service_property(_interface, signature="b", access="read")
1494
def ApprovalPending_dbus_property(self):
1495
return dbus.Boolean(bool(self.approvals_pending))
1496
1497
# ApprovedByDefault - property
1498
@dbus_service_property(_interface,
1499
signature="b",
1500
access="readwrite")
1501
def ApprovedByDefault_dbus_property(self, value=None):
1502
if value is None: # get
1503
return dbus.Boolean(self.approved_by_default)
1504
self.approved_by_default = bool(value)
1505
1506
# ApprovalDelay - property
1507
@dbus_service_property(_interface,
1508
signature="t",
1509
access="readwrite")
1510
def ApprovalDelay_dbus_property(self, value=None):
1511
if value is None: # get
1512
return dbus.UInt64(self.approval_delay.total_seconds()
1513
* 1000)
1514
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1515
1516
# ApprovalDuration - property
1517
@dbus_service_property(_interface,
1518
signature="t",
1519
access="readwrite")
1520
def ApprovalDuration_dbus_property(self, value=None):
1521
if value is None: # get
1522
return dbus.UInt64(self.approval_duration.total_seconds()
1523
* 1000)
1524
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1525
1526
# Name - property
1527
@dbus_service_property(_interface, signature="s", access="read")
1528
def Name_dbus_property(self):
898
# approved_pending - property
899
@dbus_service_property(_interface, signature=u"b", access=u"read")
900
def approved_pending_dbus_property(self):
901
return dbus.Boolean(self.approved_pending())
902
903
# approved_by_default - property
904
@dbus_service_property(_interface, signature=u"b",
905
access=u"readwrite")
906
def approved_by_default_dbus_property(self):
907
return dbus.Boolean(self.approved_by_default)
908
909
# approved_delay - property
910
@dbus_service_property(_interface, signature=u"t",
911
access=u"readwrite")
912
def approved_delay_dbus_property(self):
913
return dbus.UInt64(self.approved_delay_milliseconds())
914
915
# approved_duration - property
916
@dbus_service_property(_interface, signature=u"t",
917
access=u"readwrite")
918
def approved_duration_dbus_property(self):
919
return dbus.UInt64(self._timedelta_to_milliseconds(
920
self.approved_duration))
921
922
# name - property
923
@dbus_service_property(_interface, signature=u"s", access=u"read")
924
def name_dbus_property(self):
1529
925
return dbus.String(self.name)
1530
926
1531
# Fingerprint - property
1532
@dbus_service_property(_interface, signature="s", access="read")
1533
def Fingerprint_dbus_property(self):
927
# fingerprint - property
928
@dbus_service_property(_interface, signature=u"s", access=u"read")
929
def fingerprint_dbus_property(self):
1534
930
return dbus.String(self.fingerprint)
1535
931
1536
# Host - property
1537
@dbus_service_property(_interface,
1538
signature="s",
1539
access="readwrite")
1540
def Host_dbus_property(self, value=None):
932
# host - property
933
@dbus_service_property(_interface, signature=u"s",
934
access=u"readwrite")
935
def host_dbus_property(self, value=None):
1541
936
if value is None: # get
1542
937
return dbus.String(self.host)
1543
self.host = str(value)
1544
1545
# Created - property
1546
@dbus_service_property(_interface, signature="s", access="read")
1547
def Created_dbus_property(self):
1548
return datetime_to_dbus(self.created)
1549
1550
# LastEnabled - property
1551
@dbus_service_property(_interface, signature="s", access="read")
1552
def LastEnabled_dbus_property(self):
1553
return datetime_to_dbus(self.last_enabled)
1554
1555
# Enabled - property
1556
@dbus_service_property(_interface,
1557
signature="b",
1558
access="readwrite")
1559
def Enabled_dbus_property(self, value=None):
938
self.host = value
939
# Emit D-Bus signal
940
self.PropertyChanged(dbus.String(u"host"),
941
dbus.String(value, variant_level=1))
942
943
# created - property
944
@dbus_service_property(_interface, signature=u"s", access=u"read")
945
def created_dbus_property(self):
946
return dbus.String(self._datetime_to_dbus(self.created))
947
948
# last_enabled - property
949
@dbus_service_property(_interface, signature=u"s", access=u"read")
950
def last_enabled_dbus_property(self):
951
if self.last_enabled is None:
952
return dbus.String(u"")
953
return dbus.String(self._datetime_to_dbus(self.last_enabled))
954
955
# enabled - property
956
@dbus_service_property(_interface, signature=u"b",
957
access=u"readwrite")
958
def enabled_dbus_property(self, value=None):
1560
959
if value is None: # get
1561
960
return dbus.Boolean(self.enabled)
1562
961
if value:
1564
963
else:
1565
964
self.disable()
1566
965
1567
# LastCheckedOK - property
1568
@dbus_service_property(_interface,
1569
signature="s",
1570
access="readwrite")
1571
def LastCheckedOK_dbus_property(self, value=None):
966
# last_checked_ok - property
967
@dbus_service_property(_interface, signature=u"s",
968
access=u"readwrite")
969
def last_checked_ok_dbus_property(self, value=None):
1572
970
if value is not None:
1573
971
self.checked_ok()
1574
972
return
1575
return datetime_to_dbus(self.last_checked_ok)
1576
1577
# LastCheckerStatus - property
1578
@dbus_service_property(_interface, signature="n", access="read")
1579
def LastCheckerStatus_dbus_property(self):
1580
return dbus.Int16(self.last_checker_status)
1581
1582
# Expires - property
1583
@dbus_service_property(_interface, signature="s", access="read")
1584
def Expires_dbus_property(self):
1585
return datetime_to_dbus(self.expires)
1586
1587
# LastApprovalRequest - property
1588
@dbus_service_property(_interface, signature="s", access="read")
1589
def LastApprovalRequest_dbus_property(self):
1590
return datetime_to_dbus(self.last_approval_request)
1591
1592
# Timeout - property
1593
@dbus_service_property(_interface,
1594
signature="t",
1595
access="readwrite")
1596
def Timeout_dbus_property(self, value=None):
973
if self.last_checked_ok is None:
974
return dbus.String(u"")
975
return dbus.String(self._datetime_to_dbus(self
976
.last_checked_ok))
977
978
# timeout - property
979
@dbus_service_property(_interface, signature=u"t",
980
access=u"readwrite")
981
def timeout_dbus_property(self, value=None):
1597
982
if value is None: # get
1598
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1599
old_timeout = self.timeout
983
return dbus.UInt64(self.timeout_milliseconds())
1600
984
self.timeout = datetime.timedelta(0, 0, 0, value)
1601
# Reschedule disabling
1602
if self.enabled:
1603
now = datetime.datetime.utcnow()
1604
self.expires += self.timeout - old_timeout
1605
if self.expires <= now:
1606
# The timeout has passed
1607
self.disable()
1608
else:
1609
if (getattr(self, "disable_initiator_tag", None)
1610
is None):
1611
return
1612
gobject.source_remove(self.disable_initiator_tag)
1613
self.disable_initiator_tag = gobject.timeout_add(
1614
int((self.expires - now).total_seconds() * 1000),
1615
self.disable)
1616
1617
# ExtendedTimeout - property
1618
@dbus_service_property(_interface,
1619
signature="t",
1620
access="readwrite")
1621
def ExtendedTimeout_dbus_property(self, value=None):
1622
if value is None: # get
1623
return dbus.UInt64(self.extended_timeout.total_seconds()
1624
* 1000)
1625
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1626
1627
# Interval - property
1628
@dbus_service_property(_interface,
1629
signature="t",
1630
access="readwrite")
1631
def Interval_dbus_property(self, value=None):
1632
if value is None: # get
1633
return dbus.UInt64(self.interval.total_seconds() * 1000)
985
# Emit D-Bus signal
986
self.PropertyChanged(dbus.String(u"timeout"),
987
dbus.UInt64(value, variant_level=1))
988
if getattr(self, u"disable_initiator_tag", None) is None:
989
return
990
# Reschedule timeout
991
gobject.source_remove(self.disable_initiator_tag)
992
self.disable_initiator_tag = None
993
time_to_die = (self.
994
_timedelta_to_milliseconds((self
995
.last_checked_ok
996
+ self.timeout)
997
- datetime.datetime
998
.utcnow()))
999
if time_to_die <= 0:
1000
# The timeout has passed
1001
self.disable()
1002
else:
1003
self.disable_initiator_tag = (gobject.timeout_add
1004
(time_to_die, self.disable))
1005
1006
# interval - property
1007
@dbus_service_property(_interface, signature=u"t",
1008
access=u"readwrite")
1009
def interval_dbus_property(self, value=None):
1010
if value is None: # get
1011
return dbus.UInt64(self.interval_milliseconds())
1634
1012
self.interval = datetime.timedelta(0, 0, 0, value)
1635
if getattr(self, "checker_initiator_tag", None) is None:
1013
# Emit D-Bus signal
1014
self.PropertyChanged(dbus.String(u"interval"),
1015
dbus.UInt64(value, variant_level=1))
1016
if getattr(self, u"checker_initiator_tag", None) is None:
1636
1017
return
1637
if self.enabled:
1638
# Reschedule checker run
1639
gobject.source_remove(self.checker_initiator_tag)
1640
self.checker_initiator_tag = gobject.timeout_add(
1641
value, self.start_checker)
1642
self.start_checker() # Start one now, too
1643
1644
# Checker - property
1645
@dbus_service_property(_interface,
1646
signature="s",
1647
access="readwrite")
1648
def Checker_dbus_property(self, value=None):
1018
# Reschedule checker run
1019
gobject.source_remove(self.checker_initiator_tag)
1020
self.checker_initiator_tag = (gobject.timeout_add
1021
(value, self.start_checker))
1022
self.start_checker() # Start one now, too
1023
1024
# checker - property
1025
@dbus_service_property(_interface, signature=u"s",
1026
access=u"readwrite")
1027
def checker_dbus_property(self, value=None):
1649
1028
if value is None: # get
1650
1029
return dbus.String(self.checker_command)
1651
self.checker_command = str(value)
1030
self.checker_command = value
1031
# Emit D-Bus signal
1032
self.PropertyChanged(dbus.String(u"checker"),
1033
dbus.String(self.checker_command,
1034
variant_level=1))
1652
1035
1653
# CheckerRunning - property
1654
@dbus_service_property(_interface,
1655
signature="b",
1656
access="readwrite")
1657
def CheckerRunning_dbus_property(self, value=None):
1036
# checker_running - property
1037
@dbus_service_property(_interface, signature=u"b",
1038
access=u"readwrite")
1039
def checker_running_dbus_property(self, value=None):
1658
1040
if value is None: # get
1659
1041
return dbus.Boolean(self.checker is not None)
1660
1042
if value:
1662
1044
else:
1663
1045
self.stop_checker()
1664
1046
1665
# ObjectPath - property
1666
@dbus_service_property(_interface, signature="o", access="read")
1667
def ObjectPath_dbus_property(self):
1047
# object_path - property
1048
@dbus_service_property(_interface, signature=u"o", access=u"read")
1049
def object_path_dbus_property(self):
1668
1050
return self.dbus_object_path # is already a dbus.ObjectPath
1669
1051
1670
# Secret = property
1671
@dbus_service_property(_interface,
1672
signature="ay",
1673
access="write",
1674
byte_arrays=True)
1675
def Secret_dbus_property(self, value):
1676
self.secret = bytes(value)
1052
# secret = property
1053
@dbus_service_property(_interface, signature=u"ay",
1054
access=u"write", byte_arrays=True)
1055
def secret_dbus_property(self, value):
1056
self.secret = str(value)
1677
1057
1678
1058
del _interface
1679
1059
1683
1063
self._pipe = child_pipe
1684
1064
self._pipe.send(('init', fpr, address))
1685
1065
if not self._pipe.recv():
1686
raise KeyError(fpr)
1687
1066
raise KeyError()
1067
1688
1068
def __getattribute__(self, name):
1689
if name == '_pipe':
1069
if(name == '_pipe'):
1690
1070
return super(ProxyClient, self).__getattribute__(name)
1691
1071
self._pipe.send(('getattr', name))
1692
1072
data = self._pipe.recv()
1693
1073
if data[0] == 'data':
1694
1074
return data[1]
1695
1075
if data[0] == 'function':
1696
1697
1076
def func(*args, **kwargs):
1698
1077
self._pipe.send(('funcall', name, args, kwargs))
1699
1078
return self._pipe.recv()[1]
1700
1701
1079
return func
1702
1080
1703
1081
def __setattr__(self, name, value):
1704
if name == '_pipe':
1082
if(name == '_pipe'):
1705
1083
return super(ProxyClient, self).__setattr__(name, value)
1706
1084
self._pipe.send(('setattr', name, value))
1707
1085
1714
1092
1715
1093
def handle(self):
1716
1094
with contextlib.closing(self.server.child_pipe) as child_pipe:
1717
logger.info("TCP connection from: %s",
1718
str(self.client_address))
1719
logger.debug("Pipe FD: %d",
1095
logger.info(u"TCP connection from: %s",
1096
unicode(self.client_address))
1097
logger.debug(u"Pipe FD: %d",
1720
1098
self.server.child_pipe.fileno())
1721
1722
session = gnutls.connection.ClientSession(
1723
self.request, gnutls.connection .X509Credentials())
1724
1099
1100
session = (gnutls.connection
1101
.ClientSession(self.request,
1102
gnutls.connection
1103
.X509Credentials()))
1104
1725
1105
# Note: gnutls.connection.X509Credentials is really a
1726
1106
# generic GnuTLS certificate credentials object so long as
1727
1107
# no X.509 keys are added to it. Therefore, we can use it
1728
1108
# here despite using OpenPGP certificates.
1729
1730
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1731
# "+AES-256-CBC", "+SHA1",
1732
# "+COMP-NULL", "+CTYPE-OPENPGP",
1733
# "+DHE-DSS"))
1109
1110
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1111
# u"+AES-256-CBC", u"+SHA1",
1112
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1113
# u"+DHE-DSS"))
1734
1114
# Use a fallback default, since this MUST be set.
1735
1115
priority = self.server.gnutls_priority
1736
1116
if priority is None:
1737
priority = "NORMAL"
1738
gnutls.library.functions.gnutls_priority_set_direct(
1739
session._c_object, priority, None)
1740
1117
priority = u"NORMAL"
1118
(gnutls.library.functions
1119
.gnutls_priority_set_direct(session._c_object,
1120
priority, None))
1121
1741
1122
# Start communication using the Mandos protocol
1742
1123
# Get protocol number
1743
1124
line = self.request.makefile().readline()
1744
logger.debug("Protocol version: %r", line)
1125
logger.debug(u"Protocol version: %r", line)
1745
1126
try:
1746
1127
if int(line.strip().split()[0]) > 1:
1747
raise RuntimeError(line)
1748
except (ValueError, IndexError, RuntimeError) as error:
1749
logger.error("Unknown protocol version: %s", error)
1128
raise RuntimeError
1129
except (ValueError, IndexError, RuntimeError), error:
1130
logger.error(u"Unknown protocol version: %s", error)
1750
1131
return
1751
1132
1752
1133
# Start GnuTLS connection
1753
1134
try:
1754
1135
session.handshake()
1755
except gnutls.errors.GNUTLSError as error:
1756
logger.warning("Handshake failed: %s", error)
1136
except gnutls.errors.GNUTLSError, error:
1137
logger.warning(u"Handshake failed: %s", error)
1757
1138
# Do not run session.bye() here: the session is not
1758
1139
# established. Just abandon the request.
1759
1140
return
1760
logger.debug("Handshake succeeded")
1761
1141
logger.debug(u"Handshake succeeded")
1142
1762
1143
approval_required = False
1763
1144
try:
1764
1145
try:
1765
fpr = self.fingerprint(
1766
self.peer_certificate(session))
1767
except (TypeError,
1768
gnutls.errors.GNUTLSError) as error:
1769
logger.warning("Bad certificate: %s", error)
1146
fpr = self.fingerprint(self.peer_certificate
1147
(session))
1148
except (TypeError, gnutls.errors.GNUTLSError), error:
1149
logger.warning(u"Bad certificate: %s", error)
1770
1150
return
1771
logger.debug("Fingerprint: %s", fpr)
1772
1151
logger.debug(u"Fingerprint: %s", fpr)
1152
1773
1153
try:
1774
1154
client = ProxyClient(child_pipe, fpr,
1775
1155
self.client_address)
1776
1156
except KeyError:
1777
1157
return
1778
1158
1779
if client.approval_delay:
1780
delay = client.approval_delay
1159
if client.approved_delay:
1160
delay = client.approved_delay
1781
1161
client.approvals_pending += 1
1782
1162
approval_required = True
1783
1163
1784
1164
while True:
1785
1165
if not client.enabled:
1786
logger.info("Client %s is disabled",
1787
client.name)
1166
logger.warning(u"Client %s is disabled",
1167
client.name)
1788
1168
if self.server.use_dbus:
1789
1169
# Emit D-Bus signal
1790
client.Rejected("Disabled")
1170
client.Rejected("Disabled")
1791
1171
return
1792
1172
1793
if client.approved or not client.approval_delay:
1173
if client._approved or not client.approved_delay:
1794
1174
#We are approved or approval is disabled
1795
1175
break
1796
elif client.approved is None:
1797
logger.info("Client %s needs approval",
1176
elif client._approved is None:
1177
logger.info(u"Client %s need approval",
1798
1178
client.name)
1799
1179
if self.server.use_dbus:
1800
1180
# Emit D-Bus signal
1801
1181
client.NeedApproval(
1802
client.approval_delay.total_seconds()
1803
* 1000, client.approved_by_default)
1182
client.approved_delay_milliseconds(),
1183
client.approved_by_default)
1804
1184
else:
1805
logger.warning("Client %s was not approved",
1185
logger.warning(u"Client %s was not approved",
1806
1186
client.name)
1807
1187
if self.server.use_dbus:
1808
1188
# Emit D-Bus signal
1809
client.Rejected("Denied")
1189
client.Rejected("Disapproved")
1810
1190
return
1811
1191
1812
1192
#wait until timeout or approved
1193
#x = float(client._timedelta_to_milliseconds(delay))
1813
1194
time = datetime.datetime.now()
1814
1195
client.changedstate.acquire()
1815
client.changedstate.wait(delay.total_seconds())
1196
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1816
1197
client.changedstate.release()
1817
1198
time2 = datetime.datetime.now()
1818
1199
if (time2 - time) >= delay:
1822
1203
client.name)
1823
1204
if self.server.use_dbus:
1824
1205
# Emit D-Bus signal
1825
client.Rejected("Approval timed out")
1206
client.Rejected("Time out")
1826
1207
return
1827
1208
else:
1828
1209
break
1831
1212
1832
1213
sent_size = 0
1833
1214
while sent_size < len(client.secret):
1834
try:
1835
sent = session.send(client.secret[sent_size:])
1836
except gnutls.errors.GNUTLSError as error:
1837
logger.warning("gnutls send failed",
1838
exc_info=error)
1839
return
1840
logger.debug("Sent: %d, remaining: %d", sent,
1841
len(client.secret) - (sent_size
1842
+ sent))
1215
# XXX handle session exception
1216
sent = session.send(client.secret[sent_size:])
1217
logger.debug(u"Sent: %d, remaining: %d",
1218
sent, len(client.secret)
1219
- (sent_size + sent))
1843
1220
sent_size += sent
1844
1845
logger.info("Sending secret to %s", client.name)
1846
# bump the timeout using extended_timeout
1847
client.bump_timeout(client.extended_timeout)
1221
1222
logger.info(u"Sending secret to %s", client.name)
1223
# bump the timeout as if seen
1224
client.checked_ok()
1848
1225
if self.server.use_dbus:
1849
1226
# Emit D-Bus signal
1850
1227
client.GotSecret()
1852
1229
finally:
1853
1230
if approval_required:
1854
1231
client.approvals_pending -= 1
1855
try:
1856
session.bye()
1857
except gnutls.errors.GNUTLSError as error:
1858
logger.warning("GnuTLS bye failed",
1859
exc_info=error)
1232
session.bye()
1860
1233
1861
1234
@staticmethod
1862
1235
def peer_certificate(session):
1863
1236
"Return the peer's OpenPGP certificate as a bytestring"
1864
1237
# If not an OpenPGP certificate...
1865
if (gnutls.library.functions.gnutls_certificate_type_get(
1866
session._c_object)
1238
if (gnutls.library.functions
1239
.gnutls_certificate_type_get(session._c_object)
1867
1240
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1868
1241
# ...do the normal thing
1869
1242
return session.peer_certificate
1872
1245
.gnutls_certificate_get_peers
1873
1246
(session._c_object, ctypes.byref(list_size)))
1874
1247
if not bool(cert_list) and list_size.value != 0:
1875
raise gnutls.errors.GNUTLSError("error getting peer"
1876
" certificate")
1248
raise gnutls.errors.GNUTLSError(u"error getting peer"
1249
u" certificate")
1877
1250
if list_size.value == 0:
1878
1251
return None
1879
1252
cert = cert_list[0]
1883
1256
def fingerprint(openpgp):
1884
1257
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1885
1258
# New GnuTLS "datum" with the OpenPGP public key
1886
datum = gnutls.library.types.gnutls_datum_t(
1887
ctypes.cast(ctypes.c_char_p(openpgp),
1888
ctypes.POINTER(ctypes.c_ubyte)),
1889
ctypes.c_uint(len(openpgp)))
1259
datum = (gnutls.library.types
1260
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1261
ctypes.POINTER
1262
(ctypes.c_ubyte)),
1263
ctypes.c_uint(len(openpgp))))
1890
1264
# New empty GnuTLS certificate
1891
1265
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1892
gnutls.library.functions.gnutls_openpgp_crt_init(
1893
ctypes.byref(crt))
1266
(gnutls.library.functions
1267
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
1894
1268
# Import the OpenPGP public key into the certificate
1895
gnutls.library.functions.gnutls_openpgp_crt_import(
1896
crt, ctypes.byref(datum),
1897
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
1269
(gnutls.library.functions
1270
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1271
gnutls.library.constants
1272
.GNUTLS_OPENPGP_FMT_RAW))
1898
1273
# Verify the self signature in the key
1899
1274
crtverify = ctypes.c_uint()
1900
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
1901
crt, 0, ctypes.byref(crtverify))
1275
(gnutls.library.functions
1276
.gnutls_openpgp_crt_verify_self(crt, 0,
1277
ctypes.byref(crtverify)))
1902
1278
if crtverify.value != 0:
1903
1279
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1904
raise gnutls.errors.CertificateSecurityError(
1905
"Verify failed")
1280
raise (gnutls.errors.CertificateSecurityError
1281
(u"Verify failed"))
1906
1282
# New buffer for the fingerprint
1907
1283
buf = ctypes.create_string_buffer(20)
1908
1284
buf_len = ctypes.c_size_t()
1909
1285
# Get the fingerprint from the certificate into the buffer
1910
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(
1911
crt, ctypes.byref(buf), ctypes.byref(buf_len))
1286
(gnutls.library.functions
1287
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1288
ctypes.byref(buf_len)))
1912
1289
# Deinit the certificate
1913
1290
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1914
1291
# Convert the buffer to a Python bytestring
1915
1292
fpr = ctypes.string_at(buf, buf_len.value)
1916
1293
# Convert the bytestring to hexadecimal notation
1917
hex_fpr = binascii.hexlify(fpr).upper()
1294
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1918
1295
return hex_fpr
1919
1296
1920
1297
1921
1298
class MultiprocessingMixIn(object):
1922
1299
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1923
1924
1300
def sub_process_main(self, request, address):
1925
1301
try:
1926
1302
self.finish_request(request, address)
1927
except Exception:
1303
except:
1928
1304
self.handle_error(request, address)
1929
1305
self.close_request(request)
1930
1306
1931
1307
def process_request(self, request, address):
1932
1308
"""Start a new process to process the request."""
1933
proc = multiprocessing.Process(target = self.sub_process_main,
1934
args = (request, address))
1935
proc.start()
1936
return proc
1937
1309
multiprocessing.Process(target = self.sub_process_main,
1310
args = (request, address)).start()
1938
1311
1939
1312
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1940
1313
""" adds a pipe to the MixIn """
1941
1942
1314
def process_request(self, request, client_address):
1943
1315
"""Overrides and wraps the original process_request().
1944
1316
1945
1317
This function creates a new pipe in self.pipe
1946
1318
"""
1947
1319
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1948
1949
proc = MultiprocessingMixIn.process_request(self, request,
1950
client_address)
1320
1321
super(MultiprocessingMixInWithPipe,
1322
self).process_request(request, client_address)
1951
1323
self.child_pipe.close()
1952
self.add_pipe(parent_pipe, proc)
1953
1954
def add_pipe(self, parent_pipe, proc):
1324
self.add_pipe(parent_pipe)
1325
1326
def add_pipe(self, parent_pipe):
1955
1327
"""Dummy function; override as necessary"""
1956
raise NotImplementedError()
1957
1328
pass
1958
1329
1959
1330
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1960
1331
socketserver.TCPServer, object):
1965
1336
interface: None or a network interface name (string)
1966
1337
use_ipv6: Boolean; to use IPv6 or not
1967
1338
"""
1968
1969
1339
def __init__(self, server_address, RequestHandlerClass,
1970
interface=None,
1971
use_ipv6=True,
1972
socketfd=None):
1973
"""If socketfd is set, use that file descriptor instead of
1974
creating a new one with socket.socket().
1975
"""
1340
interface=None, use_ipv6=True):
1976
1341
self.interface = interface
1977
1342
if use_ipv6:
1978
1343
self.address_family = socket.AF_INET6
1979
if socketfd is not None:
1980
# Save the file descriptor
1981
self.socketfd = socketfd
1982
# Save the original socket.socket() function
1983
self.socket_socket = socket.socket
1984
# To implement --socket, we monkey patch socket.socket.
1985
#
1986
# (When socketserver.TCPServer is a new-style class, we
1987
# could make self.socket into a property instead of monkey
1988
# patching socket.socket.)
1989
#
1990
# Create a one-time-only replacement for socket.socket()
1991
@functools.wraps(socket.socket)
1992
def socket_wrapper(*args, **kwargs):
1993
# Restore original function so subsequent calls are
1994
# not affected.
1995
socket.socket = self.socket_socket
1996
del self.socket_socket
1997
# This time only, return a new socket object from the
1998
# saved file descriptor.
1999
return socket.fromfd(self.socketfd, *args, **kwargs)
2000
# Replace socket.socket() function with wrapper
2001
socket.socket = socket_wrapper
2002
# The socketserver.TCPServer.__init__ will call
2003
# socket.socket(), which might be our replacement,
2004
# socket_wrapper(), if socketfd was set.
2005
1344
socketserver.TCPServer.__init__(self, server_address,
2006
1345
RequestHandlerClass)
2007
2008
1346
def server_bind(self):
2009
1347
"""This overrides the normal server_bind() function
2010
1348
to bind to an interface if one was specified, and also NOT to
2011
1349
bind to an address or port if they were not specified."""
2012
1350
if self.interface is not None:
2013
1351
if SO_BINDTODEVICE is None:
2014
logger.error("SO_BINDTODEVICE does not exist;"
2015
" cannot bind to interface %s",
1352
logger.error(u"SO_BINDTODEVICE does not exist;"
1353
u" cannot bind to interface %s",
2016
1354
self.interface)
2017
1355
else:
2018
1356
try:
2019
self.socket.setsockopt(
2020
socket.SOL_SOCKET, SO_BINDTODEVICE,
2021
(self.interface + "\0").encode("utf-8"))
2022
except socket.error as error:
2023
if error.errno == errno.EPERM:
2024
logger.error("No permission to bind to"
2025
" interface %s", self.interface)
2026
elif error.errno == errno.ENOPROTOOPT:
2027
logger.error("SO_BINDTODEVICE not available;"
2028
" cannot bind to interface %s",
2029
self.interface)
2030
elif error.errno == errno.ENODEV:
2031
logger.error("Interface %s does not exist,"
2032
" cannot bind", self.interface)
1357
self.socket.setsockopt(socket.SOL_SOCKET,
1358
SO_BINDTODEVICE,
1359
str(self.interface
1360
+ u'\0'))
1361
except socket.error, error:
1362
if error[0] == errno.EPERM:
1363
logger.error(u"No permission to"
1364
u" bind to interface %s",
1365
self.interface)
1366
elif error[0] == errno.ENOPROTOOPT:
1367
logger.error(u"SO_BINDTODEVICE not available;"
1368
u" cannot bind to interface %s",
1369
self.interface)
2033
1370
else:
2034
1371
raise
2035
1372
# Only bind(2) the socket if we really need to.
2036
1373
if self.server_address[0] or self.server_address[1]:
2037
1374
if not self.server_address[0]:
2038
1375
if self.address_family == socket.AF_INET6:
2039
any_address = "::" # in6addr_any
1376
any_address = u"::" # in6addr_any
2040
1377
else:
2041
any_address = "0.0.0.0" # INADDR_ANY
1378
any_address = socket.INADDR_ANY
2042
1379
self.server_address = (any_address,
2043
1380
self.server_address[1])
2044
1381
elif not self.server_address[1]:
2045
self.server_address = (self.server_address[0], 0)
1382
self.server_address = (self.server_address[0],
1383
0)
2046
1384
# if self.interface:
2047
1385
# self.server_address = (self.server_address[0],
2048
1386
# 0, # port
2062
1400
2063
1401
Assumes a gobject.MainLoop event loop.
2064
1402
"""
2065
2066
1403
def __init__(self, server_address, RequestHandlerClass,
2067
interface=None,
2068
use_ipv6=True,
2069
clients=None,
2070
gnutls_priority=None,
2071
use_dbus=True,
2072
socketfd=None):
1404
interface=None, use_ipv6=True, clients=None,
1405
gnutls_priority=None, use_dbus=True):
2073
1406
self.enabled = False
2074
1407
self.clients = clients
2075
1408
if self.clients is None:
2076
self.clients = {}
1409
self.clients = set()
2077
1410
self.use_dbus = use_dbus
2078
1411
self.gnutls_priority = gnutls_priority
2079
1412
IPv6_TCPServer.__init__(self, server_address,
2080
1413
RequestHandlerClass,
2081
1414
interface = interface,
2082
use_ipv6 = use_ipv6,
2083
socketfd = socketfd)
2084
1415
use_ipv6 = use_ipv6)
2085
1416
def server_activate(self):
2086
1417
if self.enabled:
2087
1418
return socketserver.TCPServer.server_activate(self)
2088
2089
1419
def enable(self):
2090
1420
self.enabled = True
2091
2092
def add_pipe(self, parent_pipe, proc):
1421
def add_pipe(self, parent_pipe):
2093
1422
# Call "handle_ipc" for both data and EOF events
2094
gobject.io_add_watch(
2095
parent_pipe.fileno(),
2096
gobject.IO_IN | gobject.IO_HUP,
2097
functools.partial(self.handle_ipc,
2098
parent_pipe = parent_pipe,
2099
proc = proc))
2100
2101
def handle_ipc(self, source, condition,
2102
parent_pipe=None,
2103
proc = None,
1423
gobject.io_add_watch(parent_pipe.fileno(),
1424
gobject.IO_IN | gobject.IO_HUP,
1425
functools.partial(self.handle_ipc,
1426
parent_pipe = parent_pipe))
1427
1428
def handle_ipc(self, source, condition, parent_pipe=None,
2104
1429
client_object=None):
2105
# error, or the other end of multiprocessing.Pipe has closed
2106
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2107
# Wait for other process to exit
2108
proc.join()
1430
condition_names = {
1431
gobject.IO_IN: u"IN", # There is data to read.
1432
gobject.IO_OUT: u"OUT", # Data can be written (without
1433
# blocking).
1434
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1435
gobject.IO_ERR: u"ERR", # Error condition.
1436
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1437
# broken, usually for pipes and
1438
# sockets).
1439
}
1440
conditions_string = ' | '.join(name
1441
for cond, name in
1442
condition_names.iteritems()
1443
if cond & condition)
1444
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1445
conditions_string)
1446
1447
# error or the other end of multiprocessing.Pipe has closed
1448
if condition & gobject.IO_HUP or condition & gobject.IO_ERR:
2109
1449
return False
2110
1450
2111
1451
# Read a request from the child
2112
1452
request = parent_pipe.recv()
1453
logger.debug(u"IPC request: %s", repr(request))
2113
1454
command = request[0]
2114
1455
2115
1456
if command == 'init':
2116
1457
fpr = request[1]
2117
1458
address = request[2]
2118
1459
2119
for c in self.clients.itervalues():
1460
for c in self.clients:
2120
1461
if c.fingerprint == fpr:
2121
1462
client = c
2122
1463
break
2123
1464
else:
2124
logger.info("Client not found for fingerprint: %s, ad"
2125
"dress: %s", fpr, address)
1465
logger.warning(u"Client not found for fingerprint: %s, ad"
1466
u"dress: %s", fpr, address)
2126
1467
if self.use_dbus:
2127
1468
# Emit D-Bus signal
2128
mandos_dbus_service.ClientNotFound(fpr,
2129
address[0])
1469
mandos_dbus_service.ClientNotFound(fpr, address)
2130
1470
parent_pipe.send(False)
2131
1471
return False
2132
1472
2133
gobject.io_add_watch(
2134
parent_pipe.fileno(),
2135
gobject.IO_IN | gobject.IO_HUP,
2136
functools.partial(self.handle_ipc,
2137
parent_pipe = parent_pipe,
2138
proc = proc,
2139
client_object = client))
1473
gobject.io_add_watch(parent_pipe.fileno(),
1474
gobject.IO_IN | gobject.IO_HUP,
1475
functools.partial(self.handle_ipc,
1476
parent_pipe = parent_pipe,
1477
client_object = client))
2140
1478
parent_pipe.send(True)
2141
# remove the old hook in favor of the new above hook on
2142
# same fileno
1479
# remove the old hook in favor of the new above hook on same fileno
2143
1480
return False
2144
1481
if command == 'funcall':
2145
1482
funcname = request[1]
2146
1483
args = request[2]
2147
1484
kwargs = request[3]
2148
1485
2149
parent_pipe.send(('data', getattr(client_object,
2150
funcname)(*args,
2151
**kwargs)))
2152
1486
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1487
2153
1488
if command == 'getattr':
2154
1489
attrname = request[1]
2155
if isinstance(client_object.__getattribute__(attrname),
2156
collections.Callable):
2157
parent_pipe.send(('function', ))
1490
if callable(client_object.__getattribute__(attrname)):
1491
parent_pipe.send(('function',))
2158
1492
else:
2159
parent_pipe.send((
2160
'data', client_object.__getattribute__(attrname)))
2161
1493
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1494
2162
1495
if command == 'setattr':
2163
1496
attrname = request[1]
2164
1497
value = request[2]
2165
1498
setattr(client_object, attrname, value)
2166
1499
2167
1500
return True
2168
1501
2169
1502
2170
def rfc3339_duration_to_delta(duration):
2171
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2172
2173
>>> rfc3339_duration_to_delta("P7D")
2174
datetime.timedelta(7)
2175
>>> rfc3339_duration_to_delta("PT60S")
2176
datetime.timedelta(0, 60)
2177
>>> rfc3339_duration_to_delta("PT60M")
2178
datetime.timedelta(0, 3600)
2179
>>> rfc3339_duration_to_delta("PT24H")
2180
datetime.timedelta(1)
2181
>>> rfc3339_duration_to_delta("P1W")
2182
datetime.timedelta(7)
2183
>>> rfc3339_duration_to_delta("PT5M30S")
2184
datetime.timedelta(0, 330)
2185
>>> rfc3339_duration_to_delta("P1DT3M20S")
2186
datetime.timedelta(1, 200)
2187
"""
2188
2189
# Parsing an RFC 3339 duration with regular expressions is not
2190
# possible - there would have to be multiple places for the same
2191
# values, like seconds. The current code, while more esoteric, is
2192
# cleaner without depending on a parsing library. If Python had a
2193
# built-in library for parsing we would use it, but we'd like to
2194
# avoid excessive use of external libraries.
2195
2196
# New type for defining tokens, syntax, and semantics all-in-one
2197
Token = collections.namedtuple("Token", (
2198
"regexp", # To match token; if "value" is not None, must have
2199
# a "group" containing digits
2200
"value", # datetime.timedelta or None
2201
"followers")) # Tokens valid after this token
2202
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2203
# the "duration" ABNF definition in RFC 3339, Appendix A.
2204
token_end = Token(re.compile(r"$"), None, frozenset())
2205
token_second = Token(re.compile(r"(\d+)S"),
2206
datetime.timedelta(seconds=1),
2207
frozenset((token_end, )))
2208
token_minute = Token(re.compile(r"(\d+)M"),
2209
datetime.timedelta(minutes=1),
2210
frozenset((token_second, token_end)))
2211
token_hour = Token(re.compile(r"(\d+)H"),
2212
datetime.timedelta(hours=1),
2213
frozenset((token_minute, token_end)))
2214
token_time = Token(re.compile(r"T"),
2215
None,
2216
frozenset((token_hour, token_minute,
2217
token_second)))
2218
token_day = Token(re.compile(r"(\d+)D"),
2219
datetime.timedelta(days=1),
2220
frozenset((token_time, token_end)))
2221
token_month = Token(re.compile(r"(\d+)M"),
2222
datetime.timedelta(weeks=4),
2223
frozenset((token_day, token_end)))
2224
token_year = Token(re.compile(r"(\d+)Y"),
2225
datetime.timedelta(weeks=52),
2226
frozenset((token_month, token_end)))
2227
token_week = Token(re.compile(r"(\d+)W"),
2228
datetime.timedelta(weeks=1),
2229
frozenset((token_end, )))
2230
token_duration = Token(re.compile(r"P"), None,
2231
frozenset((token_year, token_month,
2232
token_day, token_time,
2233
token_week)))
2234
# Define starting values
2235
value = datetime.timedelta() # Value so far
2236
found_token = None
2237
followers = frozenset((token_duration, )) # Following valid tokens
2238
s = duration # String left to parse
2239
# Loop until end token is found
2240
while found_token is not token_end:
2241
# Search for any currently valid tokens
2242
for token in followers:
2243
match = token.regexp.match(s)
2244
if match is not None:
2245
# Token found
2246
if token.value is not None:
2247
# Value found, parse digits
2248
factor = int(match.group(1), 10)
2249
# Add to value so far
2250
value += factor * token.value
2251
# Strip token from string
2252
s = token.regexp.sub("", s, 1)
2253
# Go to found token
2254
found_token = token
2255
# Set valid next tokens
2256
followers = found_token.followers
2257
break
2258
else:
2259
# No currently valid tokens were found
2260
raise ValueError("Invalid RFC 3339 duration: {!r}"
2261
.format(duration))
2262
# End token found
2263
return value
2264
2265
2266
1503
def string_to_delta(interval):
2267
1504
"""Parse a string and return a datetime.timedelta
2268
1505
2269
>>> string_to_delta('7d')
1506
>>> string_to_delta(u'7d')
2270
1507
datetime.timedelta(7)
2271
>>> string_to_delta('60s')
1508
>>> string_to_delta(u'60s')
2272
1509
datetime.timedelta(0, 60)
2273
>>> string_to_delta('60m')
1510
>>> string_to_delta(u'60m')
2274
1511
datetime.timedelta(0, 3600)
2275
>>> string_to_delta('24h')
1512
>>> string_to_delta(u'24h')
2276
1513
datetime.timedelta(1)
2277
>>> string_to_delta('1w')
1514
>>> string_to_delta(u'1w')
2278
1515
datetime.timedelta(7)
2279
>>> string_to_delta('5m 30s')
1516
>>> string_to_delta(u'5m 30s')
2280
1517
datetime.timedelta(0, 330)
2281
1518
"""
2282
2283
try:
2284
return rfc3339_duration_to_delta(interval)
2285
except ValueError:
2286
pass
2287
2288
1519
timevalue = datetime.timedelta(0)
2289
1520
for s in interval.split():
2290
1521
try:
2291
suffix = s[-1]
1522
suffix = unicode(s[-1])
2292
1523
value = int(s[:-1])
2293
if suffix == "d":
1524
if suffix == u"d":
2294
1525
delta = datetime.timedelta(value)
2295
elif suffix == "s":
1526
elif suffix == u"s":
2296
1527
delta = datetime.timedelta(0, value)
2297
elif suffix == "m":
1528
elif suffix == u"m":
2298
1529
delta = datetime.timedelta(0, 0, 0, 0, value)
2299
elif suffix == "h":
1530
elif suffix == u"h":
2300
1531
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
2301
elif suffix == "w":
1532
elif suffix == u"w":
2302
1533
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2303
1534
else:
2304
raise ValueError("Unknown suffix {!r}".format(suffix))
2305
except IndexError as e:
2306
raise ValueError(*(e.args))
1535
raise ValueError(u"Unknown suffix %r" % suffix)
1536
except (ValueError, IndexError), e:
1537
raise ValueError(e.message)
2307
1538
timevalue += delta
2308
1539
return timevalue
2309
1540
2310
1541
1542
def if_nametoindex(interface):
1543
"""Call the C function if_nametoindex(), or equivalent
1544
1545
Note: This function cannot accept a unicode string."""
1546
global if_nametoindex
1547
try:
1548
if_nametoindex = (ctypes.cdll.LoadLibrary
1549
(ctypes.util.find_library(u"c"))
1550
.if_nametoindex)
1551
except (OSError, AttributeError):
1552
logger.warning(u"Doing if_nametoindex the hard way")
1553
def if_nametoindex(interface):
1554
"Get an interface index the hard way, i.e. using fcntl()"
1555
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1556
with contextlib.closing(socket.socket()) as s:
1557
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1558
struct.pack(str(u"16s16x"),
1559
interface))
1560
interface_index = struct.unpack(str(u"I"),
1561
ifreq[16:20])[0]
1562
return interface_index
1563
return if_nametoindex(interface)
1564
1565
2311
1566
def daemon(nochdir = False, noclose = False):
2312
1567
"""See daemon(3). Standard BSD Unix function.
2313
1568
2316
1571
sys.exit()
2317
1572
os.setsid()
2318
1573
if not nochdir:
2319
os.chdir("/")
1574
os.chdir(u"/")
2320
1575
if os.fork():
2321
1576
sys.exit()
2322
1577
if not noclose:
2323
1578
# Close all standard open file descriptors
2324
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1579
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2325
1580
if not stat.S_ISCHR(os.fstat(null).st_mode):
2326
1581
raise OSError(errno.ENODEV,
2327
"{} not a character device"
2328
.format(os.devnull))
1582
u"%s not a character device"
1583
% os.path.devnull)
2329
1584
os.dup2(null, sys.stdin.fileno())
2330
1585
os.dup2(null, sys.stdout.fileno())
2331
1586
os.dup2(null, sys.stderr.fileno())
2338
1593
##################################################################
2339
1594
# Parsing of options, both command line and config file
2340
1595
2341
parser = argparse.ArgumentParser()
2342
parser.add_argument("-v", "--version", action="version",
2343
version = "%(prog)s {}".format(version),
2344
help="show version number and exit")
2345
parser.add_argument("-i", "--interface", metavar="IF",
2346
help="Bind to interface IF")
2347
parser.add_argument("-a", "--address",
2348
help="Address to listen for requests on")
2349
parser.add_argument("-p", "--port", type=int,
2350
help="Port number to receive requests on")
2351
parser.add_argument("--check", action="store_true",
2352
help="Run self-test")
2353
parser.add_argument("--debug", action="store_true",
2354
help="Debug mode; run in foreground and log"
2355
" to terminal", default=None)
2356
parser.add_argument("--debuglevel", metavar="LEVEL",
2357
help="Debug level for stdout output")
2358
parser.add_argument("--priority", help="GnuTLS"
2359
" priority string (see GnuTLS documentation)")
2360
parser.add_argument("--servicename",
2361
metavar="NAME", help="Zeroconf service name")
2362
parser.add_argument("--configdir",
2363
default="/etc/mandos", metavar="DIR",
2364
help="Directory to search for configuration"
2365
" files")
2366
parser.add_argument("--no-dbus", action="store_false",
2367
dest="use_dbus", help="Do not provide D-Bus"
2368
" system bus interface", default=None)
2369
parser.add_argument("--no-ipv6", action="store_false",
2370
dest="use_ipv6", help="Do not use IPv6",
2371
default=None)
2372
parser.add_argument("--no-restore", action="store_false",
2373
dest="restore", help="Do not restore stored"
2374
" state", default=None)
2375
parser.add_argument("--socket", type=int,
2376
help="Specify a file descriptor to a network"
2377
" socket to use instead of creating one")
2378
parser.add_argument("--statedir", metavar="DIR",
2379
help="Directory to save/restore state in")
2380
parser.add_argument("--foreground", action="store_true",
2381
help="Run in foreground", default=None)
2382
parser.add_argument("--no-zeroconf", action="store_false",
2383
dest="zeroconf", help="Do not use Zeroconf",
2384
default=None)
2385
2386
options = parser.parse_args()
1596
parser = optparse.OptionParser(version = "%%prog %s" % version)
1597
parser.add_option("-i", u"--interface", type=u"string",
1598
metavar="IF", help=u"Bind to interface IF")
1599
parser.add_option("-a", u"--address", type=u"string",
1600
help=u"Address to listen for requests on")
1601
parser.add_option("-p", u"--port", type=u"int",
1602
help=u"Port number to receive requests on")
1603
parser.add_option("--check", action=u"store_true",
1604
help=u"Run self-test")
1605
parser.add_option("--debug", action=u"store_true",
1606
help=u"Debug mode; run in foreground and log to"
1607
u" terminal")
1608
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1609
u" priority string (see GnuTLS documentation)")
1610
parser.add_option("--servicename", type=u"string",
1611
metavar=u"NAME", help=u"Zeroconf service name")
1612
parser.add_option("--configdir", type=u"string",
1613
default=u"/etc/mandos", metavar=u"DIR",
1614
help=u"Directory to search for configuration"
1615
u" files")
1616
parser.add_option("--no-dbus", action=u"store_false",
1617
dest=u"use_dbus", help=u"Do not provide D-Bus"
1618
u" system bus interface")
1619
parser.add_option("--no-ipv6", action=u"store_false",
1620
dest=u"use_ipv6", help=u"Do not use IPv6")
1621
options = parser.parse_args()[0]
2387
1622
2388
1623
if options.check:
2389
1624
import doctest
2390
fail_count, test_count = doctest.testmod()
2391
sys.exit(os.EX_OK if fail_count == 0 else 1)
1625
doctest.testmod()
1626
sys.exit()
2392
1627
2393
1628
# Default values for config file for server-global settings
2394
server_defaults = { "interface": "",
2395
"address": "",
2396
"port": "",
2397
"debug": "False",
2398
"priority":
2399
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2400
":+SIGN-DSA-SHA256",
2401
"servicename": "Mandos",
2402
"use_dbus": "True",
2403
"use_ipv6": "True",
2404
"debuglevel": "",
2405
"restore": "True",
2406
"socket": "",
2407
"statedir": "/var/lib/mandos",
2408
"foreground": "False",
2409
"zeroconf": "True",
2410
}
1629
server_defaults = { u"interface": u"",
1630
u"address": u"",
1631
u"port": u"",
1632
u"debug": u"False",
1633
u"priority":
1634
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1635
u"servicename": u"Mandos",
1636
u"use_dbus": u"True",
1637
u"use_ipv6": u"True",
1638
}
2411
1639
2412
1640
# Parse config file for server-global settings
2413
1641
server_config = configparser.SafeConfigParser(server_defaults)
2414
1642
del server_defaults
2415
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1643
server_config.read(os.path.join(options.configdir,
1644
u"mandos.conf"))
2416
1645
# Convert the SafeConfigParser object to a dict
2417
1646
server_settings = server_config.defaults()
2418
1647
# Use the appropriate methods on the non-string config options
2419
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2420
server_settings[option] = server_config.getboolean("DEFAULT",
1648
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1649
server_settings[option] = server_config.getboolean(u"DEFAULT",
2421
1650
option)
2422
1651
if server_settings["port"]:
2423
server_settings["port"] = server_config.getint("DEFAULT",
2424
"port")
2425
if server_settings["socket"]:
2426
server_settings["socket"] = server_config.getint("DEFAULT",
2427
"socket")
2428
# Later, stdin will, and stdout and stderr might, be dup'ed
2429
# over with an opened os.devnull. But we don't want this to
2430
# happen with a supplied network socket.
2431
if 0 <= server_settings["socket"] <= 2:
2432
server_settings["socket"] = os.dup(server_settings
2433
["socket"])
1652
server_settings["port"] = server_config.getint(u"DEFAULT",
1653
u"port")
2434
1654
del server_config
2435
1655
2436
1656
# Override the settings from the config file with command line
2437
1657
# options, if set.
2438
for option in ("interface", "address", "port", "debug",
2439
"priority", "servicename", "configdir", "use_dbus",
2440
"use_ipv6", "debuglevel", "restore", "statedir",
2441
"socket", "foreground", "zeroconf"):
1658
for option in (u"interface", u"address", u"port", u"debug",
1659
u"priority", u"servicename", u"configdir",
1660
u"use_dbus", u"use_ipv6"):
2442
1661
value = getattr(options, option)
2443
1662
if value is not None:
2444
1663
server_settings[option] = value
2445
1664
del options
2446
1665
# Force all strings to be unicode
2447
1666
for option in server_settings.keys():
2448
if isinstance(server_settings[option], bytes):
2449
server_settings[option] = (server_settings[option]
2450
.decode("utf-8"))
2451
# Force all boolean options to be boolean
2452
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2453
"foreground", "zeroconf"):
2454
server_settings[option] = bool(server_settings[option])
2455
# Debug implies foreground
2456
if server_settings["debug"]:
2457
server_settings["foreground"] = True
1667
if type(server_settings[option]) is str:
1668
server_settings[option] = unicode(server_settings[option])
2458
1669
# Now we have our good server settings in "server_settings"
2459
1670
2460
1671
##################################################################
2461
1672
2462
if (not server_settings["zeroconf"]
2463
and not (server_settings["port"]
2464
or server_settings["socket"] != "")):
2465
parser.error("Needs port or socket to work without Zeroconf")
2466
2467
1673
# For convenience
2468
debug = server_settings["debug"]
2469
debuglevel = server_settings["debuglevel"]
2470
use_dbus = server_settings["use_dbus"]
2471
use_ipv6 = server_settings["use_ipv6"]
2472
stored_state_path = os.path.join(server_settings["statedir"],
2473
stored_state_file)
2474
foreground = server_settings["foreground"]
2475
zeroconf = server_settings["zeroconf"]
2476
2477
if debug:
2478
initlogger(debug, logging.DEBUG)
2479
else:
2480
if not debuglevel:
2481
initlogger(debug)
2482
else:
2483
level = getattr(logging, debuglevel.upper())
2484
initlogger(debug, level)
2485
2486
if server_settings["servicename"] != "Mandos":
2487
syslogger.setFormatter(
2488
logging.Formatter('Mandos ({}) [%(process)d]:'
2489
' %(levelname)s: %(message)s'.format(
2490
server_settings["servicename"])))
1674
debug = server_settings[u"debug"]
1675
use_dbus = server_settings[u"use_dbus"]
1676
use_ipv6 = server_settings[u"use_ipv6"]
1677
1678
if not debug:
1679
syslogger.setLevel(logging.WARNING)
1680
console.setLevel(logging.WARNING)
1681
1682
if server_settings[u"servicename"] != u"Mandos":
1683
syslogger.setFormatter(logging.Formatter
1684
(u'Mandos (%s) [%%(process)d]:'
1685
u' %%(levelname)s: %%(message)s'
1686
% server_settings[u"servicename"]))
2491
1687
2492
1688
# Parse config file with clients
2493
client_config = configparser.SafeConfigParser(Client
2494
.client_defaults)
2495
client_config.read(os.path.join(server_settings["configdir"],
2496
"clients.conf"))
1689
client_defaults = { u"timeout": u"1h",
1690
u"interval": u"5m",
1691
u"checker": u"fping -q -- %%(host)s",
1692
u"host": u"",
1693
u"approved_delay": u"5m",
1694
u"approved_duration": u"1s",
1695
}
1696
client_config = configparser.SafeConfigParser(client_defaults)
1697
client_config.read(os.path.join(server_settings[u"configdir"],
1698
u"clients.conf"))
2497
1699
2498
1700
global mandos_dbus_service
2499
1701
mandos_dbus_service = None
2500
1702
2501
socketfd = None
2502
if server_settings["socket"] != "":
2503
socketfd = server_settings["socket"]
2504
tcp_server = MandosServer(
2505
(server_settings["address"], server_settings["port"]),
2506
ClientHandler,
2507
interface=(server_settings["interface"] or None),
2508
use_ipv6=use_ipv6,
2509
gnutls_priority=server_settings["priority"],
2510
use_dbus=use_dbus,
2511
socketfd=socketfd)
2512
if not foreground:
2513
pidfilename = "/run/mandos.pid"
2514
if not os.path.isdir("/run/."):
2515
pidfilename = "/var/run/mandos.pid"
2516
pidfile = None
2517
try:
2518
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2519
except IOError as e:
2520
logger.error("Could not open file %r", pidfilename,
2521
exc_info=e)
1703
tcp_server = MandosServer((server_settings[u"address"],
1704
server_settings[u"port"]),
1705
ClientHandler,
1706
interface=server_settings[u"interface"],
1707
use_ipv6=use_ipv6,
1708
gnutls_priority=
1709
server_settings[u"priority"],
1710
use_dbus=use_dbus)
1711
pidfilename = u"/var/run/mandos.pid"
1712
try:
1713
pidfile = open(pidfilename, u"w")
1714
except IOError:
1715
logger.error(u"Could not open file %r", pidfilename)
2522
1716
2523
for name in ("_mandos", "mandos", "nobody"):
1717
try:
1718
uid = pwd.getpwnam(u"_mandos").pw_uid
1719
gid = pwd.getpwnam(u"_mandos").pw_gid
1720
except KeyError:
2524
1721
try:
2525
uid = pwd.getpwnam(name).pw_uid
2526
gid = pwd.getpwnam(name).pw_gid
2527
break
1722
uid = pwd.getpwnam(u"mandos").pw_uid
1723
gid = pwd.getpwnam(u"mandos").pw_gid
2528
1724
except KeyError:
2529
continue
2530
else:
2531
uid = 65534
2532
gid = 65534
1725
try:
1726
uid = pwd.getpwnam(u"nobody").pw_uid
1727
gid = pwd.getpwnam(u"nobody").pw_gid
1728
except KeyError:
1729
uid = 65534
1730
gid = 65534
2533
1731
try:
2534
1732
os.setgid(gid)
2535
1733
os.setuid(uid)
2536
except OSError as error:
2537
if error.errno != errno.EPERM:
2538
raise
1734
except OSError, error:
1735
if error[0] != errno.EPERM:
1736
raise error
2539
1737
1738
# Enable all possible GnuTLS debugging
2540
1739
if debug:
2541
# Enable all possible GnuTLS debugging
2542
2543
1740
# "Use a log level over 10 to enable all debugging options."
2544
1741
# - GnuTLS manual
2545
1742
gnutls.library.functions.gnutls_global_set_log_level(11)
2546
1743
2547
1744
@gnutls.library.types.gnutls_log_func
2548
1745
def debug_gnutls(level, string):
2549
logger.debug("GnuTLS: %s", string[:-1])
2550
2551
gnutls.library.functions.gnutls_global_set_log_function(
2552
debug_gnutls)
2553
2554
# Redirect stdin so all checkers get /dev/null
2555
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2556
os.dup2(null, sys.stdin.fileno())
2557
if null > 2:
2558
os.close(null)
2559
2560
# Need to fork before connecting to D-Bus
2561
if not foreground:
2562
# Close all input and output, do double fork, etc.
2563
daemon()
2564
2565
# multiprocessing will use threads, so before we use gobject we
2566
# need to inform gobject that threads will be used.
2567
gobject.threads_init()
1746
logger.debug(u"GnuTLS: %s", string[:-1])
1747
1748
(gnutls.library.functions
1749
.gnutls_global_set_log_function(debug_gnutls))
2568
1750
2569
1751
global main_loop
2570
1752
# From the Avahi example code
2571
DBusGMainLoop(set_as_default=True)
1753
DBusGMainLoop(set_as_default=True )
2572
1754
main_loop = gobject.MainLoop()
2573
1755
bus = dbus.SystemBus()
2574
1756
# End of Avahi example code
2575
1757
if use_dbus:
2576
1758
try:
2577
bus_name = dbus.service.BusName("se.recompile.Mandos",
2578
bus,
2579
do_not_queue=True)
2580
old_bus_name = dbus.service.BusName(
2581
"se.bsnet.fukt.Mandos", bus,
2582
do_not_queue=True)
2583
except dbus.exceptions.DBusException as e:
2584
logger.error("Disabling D-Bus:", exc_info=e)
1759
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1760
bus, do_not_queue=True)
1761
except dbus.exceptions.NameExistsException, e:
1762
logger.error(unicode(e) + u", disabling D-Bus")
2585
1763
use_dbus = False
2586
server_settings["use_dbus"] = False
1764
server_settings[u"use_dbus"] = False
2587
1765
tcp_server.use_dbus = False
2588
if zeroconf:
2589
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2590
service = AvahiServiceToSyslog(
2591
name = server_settings["servicename"],
2592
servicetype = "_mandos._tcp",
2593
protocol = protocol,
2594
bus = bus)
2595
if server_settings["interface"]:
2596
service.interface = if_nametoindex(
2597
server_settings["interface"].encode("utf-8"))
2598
1766
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1767
service = AvahiService(name = server_settings[u"servicename"],
1768
servicetype = u"_mandos._tcp",
1769
protocol = protocol, bus = bus)
1770
if server_settings["interface"]:
1771
service.interface = (if_nametoindex
1772
(str(server_settings[u"interface"])))
1773
2599
1774
global multiprocessing_manager
2600
1775
multiprocessing_manager = multiprocessing.Manager()
2601
1776
2602
1777
client_class = Client
2603
1778
if use_dbus:
2604
1779
client_class = functools.partial(ClientDBus, bus = bus)
2605
2606
client_settings = Client.config_parser(client_config)
2607
old_client_settings = {}
2608
clients_data = {}
2609
2610
# This is used to redirect stdout and stderr for checker processes
2611
global wnull
2612
wnull = open(os.devnull, "w") # A writable /dev/null
2613
# Only used if server is running in foreground but not in debug
2614
# mode
2615
if debug or not foreground:
2616
wnull.close()
2617
2618
# Get client data and settings from last running state.
2619
if server_settings["restore"]:
2620
try:
2621
with open(stored_state_path, "rb") as stored_state:
2622
clients_data, old_client_settings = pickle.load(
2623
stored_state)
2624
os.remove(stored_state_path)
2625
except IOError as e:
2626
if e.errno == errno.ENOENT:
2627
logger.warning("Could not load persistent state:"
2628
" {}".format(os.strerror(e.errno)))
2629
else:
2630
logger.critical("Could not load persistent state:",
2631
exc_info=e)
2632
raise
2633
except EOFError as e:
2634
logger.warning("Could not load persistent state: "
2635
"EOFError:",
2636
exc_info=e)
2637
2638
with PGPEngine() as pgp:
2639
for client_name, client in clients_data.items():
2640
# Skip removed clients
2641
if client_name not in client_settings:
2642
continue
2643
2644
# Decide which value to use after restoring saved state.
2645
# We have three different values: Old config file,
2646
# new config file, and saved state.
2647
# New config value takes precedence if it differs from old
2648
# config value, otherwise use saved state.
2649
for name, value in client_settings[client_name].items():
2650
try:
2651
# For each value in new config, check if it
2652
# differs from the old config value (Except for
2653
# the "secret" attribute)
2654
if (name != "secret"
2655
and (value !=
2656
old_client_settings[client_name][name])):
2657
client[name] = value
2658
except KeyError:
2659
pass
2660
2661
# Clients who has passed its expire date can still be
2662
# enabled if its last checker was successful. A Client
2663
# whose checker succeeded before we stored its state is
2664
# assumed to have successfully run all checkers during
2665
# downtime.
2666
if client["enabled"]:
2667
if datetime.datetime.utcnow() >= client["expires"]:
2668
if not client["last_checked_ok"]:
2669
logger.warning(
2670
"disabling client {} - Client never "
2671
"performed a successful checker".format(
2672
client_name))
2673
client["enabled"] = False
2674
elif client["last_checker_status"] != 0:
2675
logger.warning(
2676
"disabling client {} - Client last"
2677
" checker failed with error code"
2678
" {}".format(
2679
client_name,
2680
client["last_checker_status"]))
2681
client["enabled"] = False
2682
else:
2683
client["expires"] = (
2684
datetime.datetime.utcnow()
2685
+ client["timeout"])
2686
logger.debug("Last checker succeeded,"
2687
" keeping {} enabled".format(
2688
client_name))
1780
def client_config_items(config, section):
1781
special_settings = {
1782
"approved_by_default":
1783
lambda: config.getboolean(section,
1784
"approved_by_default"),
1785
}
1786
for name, value in config.items(section):
2689
1787
try:
2690
client["secret"] = pgp.decrypt(
2691
client["encrypted_secret"],
2692
client_settings[client_name]["secret"])
2693
except PGPError:
2694
# If decryption fails, we use secret from new settings
2695
logger.debug("Failed to decrypt {} old secret".format(
2696
client_name))
2697
client["secret"] = (client_settings[client_name]
2698
["secret"])
2699
2700
# Add/remove clients based on new changes made to config
2701
for client_name in (set(old_client_settings)
2702
- set(client_settings)):
2703
del clients_data[client_name]
2704
for client_name in (set(client_settings)
2705
- set(old_client_settings)):
2706
clients_data[client_name] = client_settings[client_name]
2707
2708
# Create all client objects
2709
for client_name, client in clients_data.items():
2710
tcp_server.clients[client_name] = client_class(
2711
name = client_name,
2712
settings = client,
2713
server_settings = server_settings)
2714
1788
yield (name, special_settings[name]())
1789
except KeyError:
1790
yield (name, value)
1791
1792
tcp_server.clients.update(set(
1793
client_class(name = section,
1794
config= dict(client_config_items(
1795
client_config, section)))
1796
for section in client_config.sections()))
2715
1797
if not tcp_server.clients:
2716
logger.warning("No clients defined")
2717
2718
if not foreground:
2719
if pidfile is not None:
1798
logger.warning(u"No clients defined")
1799
1800
if debug:
1801
# Redirect stdin so all checkers get /dev/null
1802
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1803
os.dup2(null, sys.stdin.fileno())
1804
if null > 2:
1805
os.close(null)
1806
else:
1807
# No console logging
1808
logger.removeHandler(console)
1809
# Close all input and output, do double fork, etc.
1810
daemon()
1811
1812
try:
1813
with pidfile:
2720
1814
pid = os.getpid()
2721
try:
2722
with pidfile:
2723
print(pid, file=pidfile)
2724
except IOError:
2725
logger.error("Could not write to file %r with PID %d",
2726
pidfilename, pid)
1815
pidfile.write(str(pid) + "\n")
2727
1816
del pidfile
2728
del pidfilename
1817
except IOError:
1818
logger.error(u"Could not write to file %r with PID %d",
1819
pidfilename, pid)
1820
except NameError:
1821
# "pidfile" was never created
1822
pass
1823
del pidfilename
2729
1824
1825
if not debug:
1826
signal.signal(signal.SIGINT, signal.SIG_IGN)
2730
1827
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2731
1828
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2732
1829
2733
1830
if use_dbus:
2734
2735
@alternate_dbus_interfaces(
2736
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2737
class MandosDBusService(DBusObjectWithProperties):
1831
class MandosDBusService(dbus.service.Object):
2738
1832
"""A D-Bus proxy object"""
2739
2740
1833
def __init__(self):
2741
dbus.service.Object.__init__(self, bus, "/")
2742
2743
_interface = "se.recompile.Mandos"
2744
2745
@dbus_interface_annotations(_interface)
2746
def _foo(self):
2747
return {
2748
"org.freedesktop.DBus.Property.EmitsChangedSignal":
2749
"false" }
2750
2751
@dbus.service.signal(_interface, signature="o")
1834
dbus.service.Object.__init__(self, bus, u"/")
1835
_interface = u"se.bsnet.fukt.Mandos"
1836
1837
@dbus.service.signal(_interface, signature=u"o")
2752
1838
def ClientAdded(self, objpath):
2753
1839
"D-Bus signal"
2754
1840
pass
2755
1841
2756
@dbus.service.signal(_interface, signature="ss")
1842
@dbus.service.signal(_interface, signature=u"ss")
2757
1843
def ClientNotFound(self, fingerprint, address):
2758
1844
"D-Bus signal"
2759
1845
pass
2760
1846
2761
@dbus.service.signal(_interface, signature="os")
1847
@dbus.service.signal(_interface, signature=u"os")
2762
1848
def ClientRemoved(self, objpath, name):
2763
1849
"D-Bus signal"
2764
1850
pass
2765
1851
2766
@dbus.service.method(_interface, out_signature="ao")
1852
@dbus.service.method(_interface, out_signature=u"ao")
2767
1853
def GetAllClients(self):
2768
1854
"D-Bus method"
2769
return dbus.Array(c.dbus_object_path for c in
2770
tcp_server.clients.itervalues())
1855
return dbus.Array(c.dbus_object_path
1856
for c in tcp_server.clients)
2771
1857
2772
1858
@dbus.service.method(_interface,
2773
out_signature="a{oa{sv}}")
1859
out_signature=u"a{oa{sv}}")
2774
1860
def GetAllClientsWithProperties(self):
2775
1861
"D-Bus method"
2776
1862
return dbus.Dictionary(
2777
{ c.dbus_object_path: c.GetAll("")
2778
for c in tcp_server.clients.itervalues() },
2779
signature="oa{sv}")
1863
((c.dbus_object_path, c.GetAll(u""))
1864
for c in tcp_server.clients),
1865
signature=u"oa{sv}")
2780
1866
2781
@dbus.service.method(_interface, in_signature="o")
1867
@dbus.service.method(_interface, in_signature=u"o")
2782
1868
def RemoveClient(self, object_path):
2783
1869
"D-Bus method"
2784
for c in tcp_server.clients.itervalues():
1870
for c in tcp_server.clients:
2785
1871
if c.dbus_object_path == object_path:
2786
del tcp_server.clients[c.name]
1872
tcp_server.clients.remove(c)
2787
1873
c.remove_from_connection()
2788
1874
# Don't signal anything except ClientRemoved
2789
1875
c.disable(quiet=True)
2798
1884
2799
1885
def cleanup():
2800
1886
"Cleanup function; run on exit"
2801
if zeroconf:
2802
service.cleanup()
2803
2804
multiprocessing.active_children()
2805
wnull.close()
2806
if not (tcp_server.clients or client_settings):
2807
return
2808
2809
# Store client before exiting. Secrets are encrypted with key
2810
# based on what config file has. If config file is
2811
# removed/edited, old secret will thus be unrecovable.
2812
clients = {}
2813
with PGPEngine() as pgp:
2814
for client in tcp_server.clients.itervalues():
2815
key = client_settings[client.name]["secret"]
2816
client.encrypted_secret = pgp.encrypt(client.secret,
2817
key)
2818
client_dict = {}
2819
2820
# A list of attributes that can not be pickled
2821
# + secret.
2822
exclude = { "bus", "changedstate", "secret",
2823
"checker", "server_settings" }
2824
for name, typ in inspect.getmembers(dbus.service
2825
.Object):
2826
exclude.add(name)
2827
2828
client_dict["encrypted_secret"] = (client
2829
.encrypted_secret)
2830
for attr in client.client_structure:
2831
if attr not in exclude:
2832
client_dict[attr] = getattr(client, attr)
2833
2834
clients[client.name] = client_dict
2835
del client_settings[client.name]["secret"]
2836
2837
try:
2838
with tempfile.NamedTemporaryFile(
2839
mode='wb',
2840
suffix=".pickle",
2841
prefix='clients-',
2842
dir=os.path.dirname(stored_state_path),
2843
delete=False) as stored_state:
2844
pickle.dump((clients, client_settings), stored_state)
2845
tempname = stored_state.name
2846
os.rename(tempname, stored_state_path)
2847
except (IOError, OSError) as e:
2848
if not debug:
2849
try:
2850
os.remove(tempname)
2851
except NameError:
2852
pass
2853
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2854
logger.warning("Could not save persistent state: {}"
2855
.format(os.strerror(e.errno)))
2856
else:
2857
logger.warning("Could not save persistent state:",
2858
exc_info=e)
2859
raise
2860
2861
# Delete all clients, and settings from config
1887
service.cleanup()
1888
2862
1889
while tcp_server.clients:
2863
name, client = tcp_server.clients.popitem()
1890
client = tcp_server.clients.pop()
2864
1891
if use_dbus:
2865
1892
client.remove_from_connection()
1893
client.disable_hook = None
2866
1894
# Don't signal anything except ClientRemoved
2867
1895
client.disable(quiet=True)
2868
1896
if use_dbus:
2869
1897
# Emit D-Bus signal
2870
mandos_dbus_service.ClientRemoved(
2871
client.dbus_object_path, client.name)
2872
client_settings.clear()
1898
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1899
client.name)
2873
1900
2874
1901
atexit.register(cleanup)
2875
1902
2876
for client in tcp_server.clients.itervalues():
1903
for client in tcp_server.clients:
2877
1904
if use_dbus:
2878
1905
# Emit D-Bus signal
2879
1906
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2880
# Need to initiate checking of clients
2881
if client.enabled:
2882
client.init_checker()
1907
client.enable()
2883
1908
2884
1909
tcp_server.enable()
2885
1910
tcp_server.server_activate()
2886
1911
2887
1912
# Find out what port we got
2888
if zeroconf:
2889
service.port = tcp_server.socket.getsockname()[1]
1913
service.port = tcp_server.socket.getsockname()[1]
2890
1914
if use_ipv6:
2891
logger.info("Now listening on address %r, port %d,"
2892
" flowinfo %d, scope_id %d",
2893
*tcp_server.socket.getsockname())
1915
logger.info(u"Now listening on address %r, port %d,"
1916
" flowinfo %d, scope_id %d"
1917
% tcp_server.socket.getsockname())
2894
1918
else: # IPv4
2895
logger.info("Now listening on address %r, port %d",
2896
*tcp_server.socket.getsockname())
1919
logger.info(u"Now listening on address %r, port %d"
1920
% tcp_server.socket.getsockname())
2897
1921
2898
1922
#service.interface = tcp_server.socket.getsockname()[3]
2899
1923
2900
1924
try:
2901
if zeroconf:
2902
# From the Avahi example code
2903
try:
2904
service.activate()
2905
except dbus.exceptions.DBusException as error:
2906
logger.critical("D-Bus Exception", exc_info=error)
2907
cleanup()
2908
sys.exit(1)
2909
# End of Avahi example code
1925
# From the Avahi example code
1926
try:
1927
service.activate()
1928
except dbus.exceptions.DBusException, error:
1929
logger.critical(u"DBusException: %s", error)
1930
cleanup()
1931
sys.exit(1)
1932
# End of Avahi example code
2910
1933
2911
1934
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2912
1935
lambda *args, **kwargs:
2913
1936
(tcp_server.handle_request
2914
1937
(*args[2:], **kwargs) or True))
2915
1938
2916
logger.debug("Starting main loop")
1939
logger.debug(u"Starting main loop")
2917
1940
main_loop.run()
2918
except AvahiError as error:
2919
logger.critical("Avahi Error", exc_info=error)
1941
except AvahiError, error:
1942
logger.critical(u"AvahiError: %s", error)
2920
1943
cleanup()
2921
1944
sys.exit(1)
2922
1945
except KeyboardInterrupt:
2923
1946
if debug:
2924
print("", file=sys.stderr)
2925
logger.debug("Server received KeyboardInterrupt")
2926
logger.debug("Server exiting")
1947
print >> sys.stderr
1948
logger.debug(u"Server received KeyboardInterrupt")
1949
logger.debug(u"Server exiting")
2927
1950
# Must run before the D-Bus bus name gets deregistered
2928
1951
cleanup()
2929
1952
2930
2931
1953
if __name__ == '__main__':
2932
1954
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0